DR. MARY C GESSNER-PETERSON DO
NPI 1861662884
Emergency Medicine - Emergency Medical Services in Alpine, CA

Q: What is Mary Gessner-peterson's NPI number?

The NPI number for Mary Gessner-peterson is 1861662884. It was assigned to this individual provider in the NPPES registry on March 5, 2008.

Q: What is Mary Gessner-peterson's specialty?

The primary specialty registered for this NPI is Emergency Medicine, specializing in Emergency Medical Services, with taxonomy code 207PE0004X.

Active since March 05, 2008PECOS EnrolledAccepts Medicare Assignment

68.46/100

CMS Quality Rating

2710 ALPINE BLVD # 205, ALPINE, CA 91901(619) 326-4445 Get Directions Write a Review

NPPES record last updated: September 26, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 26, 2018, Mar 23, 2016 (2 updates tracked since 2016).

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About Dr. Mary C Gessner-peterson Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARY C GESSNER-PETERSON DO (NPI 1861662884) is an individual emergency medical services provider in Alpine, California, licensed in Pennsylvania (OS014103) and active in the NPI registry since March 2008. She is enrolled in Medicare PECOS, maintains a secondary practice location in Alpine, and is a graduate of Philadelphia College Of Osteopathic Medicine (2005).

NPPES Registry Identity

NPI1861662884

Entity TypeIndividualFemale

Primary Taxonomy207PE0004X

Provider Legal NameDR. MARY C GESSNER-PETERSONCredential: DO

Location Address2710 ALPINE BLVD # 205Alpine, CA 91901-2276

Mailing Address2710 Alpine BlvdAlpine, CA 91901-2276 · (619) 326-4445

Phone(619) 326-4445

Sole ProprietorYes

Medical School CMSPhiladelphia College Of Osteopathic MedicineGraduated 2005

Enumeration DateMarch 5, 2008

Last NPPES UpdateSeptember 26, 20182 updates tracked since enumeration

✔ NPI 1861662884 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency Medicine · Emergency Medical ServicesAllopathic & Osteopathic Physicians

Taxonomy Code207PE0004X

License✔ Licensed in PA · OS014103

Definition

An emergency medicine physician who specializes in non-hospital based emergency medical services (e.g., disaster site, accident scene, transport vehicle, etc.) to provide pre-hospital assessment, treatment, and transport patients.

Also ListedInternal MedicineTaxonomy 207R00000X · License 20A1174 (CA)

2710 ALPINE BLVD # 205, Alpine, CA 91901

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Secondary Practice Location 1

Location 11730 Alpine Blvd Ste 109BAlpine, CA 91901-3877 · Phone (619) 326-4445 · Fax (619) 722-1721

Other Identifiers 1

Other825521721CA · Urgent Care Tax Id

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Mary C Gessner-peterson Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9638200033

PECOS Enrollment IDI20110607000169

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Mary Gessner-peterson reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mary Gessner-Peterson Medical Group, Inc

1.3 mi

Internal Medicine

1730 ALPINE BLVD STE 205
Alpine, CA 91901

Reassigned Medicare billing, California enrollment
10 clinicians in this Medicare group

NPI 1467709220 (619) 326-4445

Alvarado Emergency Medical Associates, Inc.

18 mi

Emergency Medicine

6655 ALVARADO RD
San Diego, CA 92120

Reassigned Medicare billing, California enrollment
62 clinicians in this Medicare group

NPI 1285811992 (424) 241-1546

Datnguyen MD Inc

22 mi

Internal Medicine

9855 ERMA RD STE 133
San Diego, CA 92131

Reassigned Medicare billing, California enrollment
Medicare enrollment name: Datnguyen, M.D., Inc.
42 clinicians in this Medicare group

NPI 1215977723 (760) 656-5523

Team Physicians Of Northern California Medical Group Inc

444 mi

Emergency Medicine

5000 HOPYARD RD, SUITE 100
Pleasanton, CA 94588

Reassigned Medicare billing, California enrollment
202 clinicians in this Medicare group

NPI 1649692716 (925) 924-1600

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 55

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309

A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.

8,985 services1,027 patients

Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes 99349

An established patient home visit is a medical appointment conducted at your home, typically lasting around 40 minutes. This service is ideal for patients who may find it difficult to travel to a healthcare facility. During this visit, a healthcare professional will evaluate your health status, manage your care, and answer any health-related questions you may have.

2,853 services772 patients

Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308

A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.

2,814 services558 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

1,469 services366 patients

Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes 99305

An initial nursing facility visit per day is a service where a healthcare professional spends about 35 minutes assessing a patient's health status. This includes reviewing medical history, conducting a physical exam, and developing a care plan based on the patient's needs.

1,041 services760 patients

Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 99490

Chronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.

866 services430 patients

Removal of skin and tissue, 20.0 sq cm or less 11042

This procedure involves the surgical removal of skin and tissue, up to 20.0 square cm in size. It's often performed to treat conditions like skin cancer or to remove moles, warts, and other skin lesions. The area is numbed and the unwanted tissue is carefully cut out.

853 services172 patients

Advance care planning, first 30 minutes 99497

Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.

669 services538 patients

Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes 99350

An established patient home visit is a service where a healthcare professional visits a patient's home for a check-up or treatment. The visit typically lasts for about an hour. This service is especially beneficial for patients who may have difficulty traveling to a healthcare facility.

587 services345 patients

Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180

This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.

541 services454 patients

Application of chemical to stop tissue regrowth in wound 17250

This procedure involves applying a special chemical to a wound to prevent unwanted tissue from growing back. It aids in proper healing by ensuring only healthy tissue regrows. It's a common, safe practice in wound care.

456 services132 patients

Hospital discharge day management, more than 30 minutes 99239

Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.

360 services278 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

344 services277 patients

Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month 99439

Chronic Care Management services involve regular check-ins with healthcare professionals to manage two or more chronic conditions. It includes an additional 20 minutes of clinical staff time per month, directed by a healthcare professional, to ensure optimal health management.

239 services149 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

208 services159 patients

Nursing facility discharge management, more than 30 minutes 99316

Nursing facility discharge management over 30 minutes is a comprehensive process where a healthcare team prepares you for leaving the facility. It involves creating a tailored plan, coordinating care, and ensuring a smooth transition to your next care setting.

188 services178 patients

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

171 services11 patients

Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes 99348

An established patient home visit is a 25-minute appointment where a healthcare provider visits you at your home. This service is for patients who have previously been seen by the provider. It includes a check-up and discussion about your health concerns.

167 services151 patients

Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 99490

158 services127 patients

Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes 99310

A follow-up nursing facility visit is a routine check-up that typically lasts about 35 minutes. During this visit, your health status is evaluated, any changes in your condition are noted, and necessary adjustments to your care plan are made. It's an essential part of maintaining your health.

146 services119 patients

Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a G0179

This procedure involves a doctor or approved practitioner reviewing your health status and re-certifying your need for Medicare-covered home health services. It includes communication with the home health agency and assessment of your health reports, even when you're not physically present.

121 services93 patients

Smoking and tobacco use intensive counseling, 4-10 minutes 99406

This service provides brief, intensive counseling (4-10 minutes) to support you in quitting smoking or tobacco use. It involves discussing the risks of tobacco use, benefits of quitting, and strategies to help you stop. It's a critical step towards a healthier lifestyle.

117 services88 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

113 services91 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

111 services111 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

98 services83 patients

Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes 99345

A new patient home visit is a comprehensive 75-minute appointment conducted at your home. The healthcare professional will assess your health, discuss any concerns, and create a personalized care plan. It's convenient, comfortable, and tailored to your specific needs.

94 services94 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

91 services75 patients

Replacement of stomach stoma tube 43762

A replacement of a stomach stoma tube is a procedure where your existing tube is removed and a new one is inserted. This helps ensure the tube functions properly, allowing nutrition directly into your stomach. It's a safe, routine process done by healthcare professionals.

76 services29 patients

Removal of skin and tissue, each additional 20.0 sq cm or less 11045

This procedure involves the removal of skin and tissue, typically due to disease, injury, or abnormal growth. Each session removes an area of 20.0 square cm or less. It's performed by a trained professional and may require multiple sessions for larger areas.

63 services18 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

59 services59 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

57 services39 patients

Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow G0181

This service involves a physician overseeing your care while you receive Medicare-covered services from a home health agency. The care you're receiving is complex and involves various disciplines. The physician isn't physically present but regularly supervises your treatment to ensure optimal health outcomes.

46 services43 patients

Smoking and tobacco use intensive counseling, 4-10 minutes 99406

41 services38 patients

Urinalysis, manual test 81002

A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.

40 services37 patients

Complicated change of bladder tube 51710

A complicated change of a bladder tube refers to the process of replacing a tube that helps drain urine from your body. This procedure is typically needed when the existing tube is blocked, damaged, or infected. It's a more complex process if there are issues like tube displacement.

39 services16 patients

Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month 99439

39 services28 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

38 services38 patients

Exam of neurobehavioral status, first hour 96116

An exam of neurobehavioral status is a medical procedure that evaluates your brain's functions. This includes assessing your cognitive abilities, emotional responses, and behavioral patterns. The first hour of the exam is typically dedicated to this initial evaluation.

34 services34 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

32 services32 patients

Residence visit for new patient with moderate level of medical decision making, per day, if using time, at least 60 minutes 99344

A new patient home visit is a comprehensive service where a healthcare professional visits your home for about an hour. This visit includes an overall health assessment, discussion about your medical history, and planning for future healthcare needs. The goal is to understand your health status and provide personalized care.

30 services30 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

28 services28 patients

Complex chronic care management services for two or more chronic conditions, each additional 60 minutes of clinical staff time directed by health care professional, per calendar month 99489

Complex chronic care management is a service for patients with multiple chronic conditions. It involves an additional 60 minutes per month of clinical staff time directed by a healthcare professional. This service assists in managing your health conditions effectively.

27 services16 patients

Assessment of emotional or behavioral problems 96127

Assessment of emotional or behavioral problems involves a thorough evaluation of your feelings, thoughts, and behaviors. It's a process where professionals study patterns over time to identify potential issues like anxiety, depression, or other mental health conditions.

26 services26 patients

Skin test for tuberculosis 86580

A skin test for tuberculosis, also known as a PPD test, is a simple procedure where a small amount of testing material is injected under the skin on your arm. After 48-72 hours, the test site is checked for a reaction which may indicate TB exposure.

25 services23 patients

Exam of neurobehavioral status, first hour 96116

22 services22 patients

Advance care planning, first 30 minutes 99497

22 services22 patients

Removal of muscle and/or tissue, 20.0 sq cm or less 11043

This procedure involves the surgical removal of a specified area (20.0 sq cm or less) of muscle and/or tissue. It's typically done to treat conditions like tumors, infections, or injuries. Local or general anesthesia ensures comfort. Recovery time varies.

20 services15 patients

Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza 87428

This test uses a method called immunoassay to identify severe acute respiratory syndrome coronavirus and influenza. It works by detecting specific proteins (antigens) in a sample, like a nasal swab. It's a powerful tool in diagnosing these viral infections.

19 services19 patients

Complex chronic care management services for two or more chronic conditions, first 60 minutes of clinical staff time directed by health care professional, per calendar month 99487

Complex chronic care management is a service for patients with two or more long-term health conditions. It involves a healthcare professional directing clinical staff in providing care for the first 60 minutes each month. This helps manage your health conditions effectively.

19 services16 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

14 services14 patients

Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more 99306

An initial nursing facility visit is your first meeting with your healthcare team at a nursing facility. Lasting typically 45 minutes, this appointment involves a comprehensive health assessment and the creation of your personalized care plan. It's a crucial step to ensure your health and well-being.

14 services14 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

13 services13 patients

Physician supervision of a patient under a medicare-approved hospice (patient not present) requiring complex and multidisciplinary care modalities involving regular physician development and/or revision of care plans, review of subsequent reports of patien G0182

This service involves a doctor overseeing a patient's care in a hospice, even when the patient isn't present. The doctor regularly creates or adjusts care plans, and reviews patient reports. This supervision is needed for complex, multidisciplinary treatments. It's part of ensuring quality care under Medicare's hospice benefit.

13 services11 patients

Removal of impacted ear wax by washing 69209

Impacted ear wax removal by washing, also known as ear irrigation, involves using a pressurized flow of water to break up and dislodge the ear wax. This safe procedure helps restore normal hearing and relieve discomfort caused by the blockage.

12 services12 patients

Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus 87426

An immunoassay test for severe acute respiratory syndrome coronavirus is a diagnostic tool. It uses your body's immune response to detect the presence of the virus. It involves taking a sample, usually from your nose or throat, which is then analyzed in a lab for signs of the virus.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91901 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$94.87 typical visit price

range $62.10 – $184.71

Typical copayment $23.71 (range $15.52 – $46.17)

Most-billed visit code 99203

Established Patient

$108.42 typical visit price

range $20.62 – $151.42

Typical copayment $27.10 (range $5.15 – $37.85)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

68.46/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

52.03

Promoting Interoperability

Improvement Activities

Cost

19.51

Reported Quality Measures

Adult Sinusitis: Antibiotic Prescribed for Acute Viral Sinusitis (Overuse)

Lower rates are better for this measure.

80%134 patients1/55-star benchmark: 100%

Advance Care Plan

5%1,148 patients1/55-star benchmark: 100%

Appropriate Treatment for Upper Respiratory Infection (URI)

38%140 patients2/55-star benchmark: 100%

Colorectal Cancer Screening

7%814 patients1/55-star benchmark: 88%

Controlling High Blood Pressure

65%359 patients3/55-star benchmark: 91%

Diabetes: Eye Exam

1%215 patients1/55-star benchmark: 100%

Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)

Lower rates are better for this measure.

61%215 patients2/55-star benchmark: 91%

e-Prescribing

99%1,972 patients4/55-star benchmark: 100%

HIV Screening

2%1,046 patients1/55-star benchmark: 60%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

25%1,999 patients2/55-star benchmark: 98%

Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented

28%4,102 patients2/55-star benchmark: 61%

Provide Patients Electronic Access to Their Health Information

30%1,246 patients1/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 47

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

15 suppliers40 claims99 services$6.78 avg. paid by Medicare

Normal, low and high calibrator solution / chips A4256

DME-Other DME · category DE000N

3 suppliers11 claims11 services$2.97 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

5 suppliers14 claims22 services$1.23 avg. paid by Medicare

Bedside drainage bag, day or night, with or without anti-reflux device, with or without tube, each A4357

DME-Orthotic Devices · category DF000N

3 suppliers15 claims22 services$8.93 avg. paid by Medicare

Gauze, non-impregnated, sterile, pad size 16 sq. in. or less, without adhesive border, each dressing A6402

DME-Medical/Surgical Supplies · category DA023N

1 supplier12 claims1,080 services$0.11 avg. paid by Medicare

Canister, disposable, used with suction pump, each A7000

DME-Other DME · category DE000N

2 suppliers14 claims65 services$6.98 avg. paid by Medicare

Administration set, with small volume nonfiltered pneumatic nebulizer, disposable A7003

DME-Other DME · category DE000N

1 supplier13 claims21 services$1.32 avg. paid by Medicare

Cushion for use on nasal mask interface, replacement only, each A7032

DME-Other DME · category DE001N

4 suppliers11 claims59 services$15.70 avg. paid by Medicare

Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034

DME-Other DME · category DE001N

6 suppliers16 claims16 services$46.63 avg. paid by Medicare

Headgear used with positive airway pressure device A7035

DME-Other DME · category DE001N

6 suppliers11 claims11 services$16.13 avg. paid by Medicare

Tubing used with positive airway pressure device A7037

DME-Other DME · category DE001N

4 suppliers12 claims12 services$9.63 avg. paid by Medicare

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

6 suppliers19 claims110 services$1.65 avg. paid by Medicare

Tracheostomy tube collar/holder, each A7526

DME-Orthotic Devices · category DF000N

2 suppliers14 claims316 services$3.28 avg. paid by Medicare

Enteral feeding supply kit; syringe fed, per day, includes but not limited to feeding/flushing syringe, administration set tubing, dressings, tape B4034

Other-Enteral and Parenteral · category OB006N

5 suppliers27 claims787 services$2.86 avg. paid by Medicare

Enteral feeding supply kit; pump fed, per day, includes but not limited to feeding/flushing syringe, administration set tubing, dressings, tape B4035

Other-Enteral and Parenteral · category OB006N

3 suppliers14 claims402 services$4.35 avg. paid by Medicare

Enteral formula, nutritionally complete with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4150

Other-Enteral and Parenteral · category OB006N

1 supplier13 claims6,749 services$0.33 avg. paid by Medicare

Enteral formula, nutritionally complete, calorically dense (equal to or greater than 1.5 kcal/ml) with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4152

Other-Enteral and Parenteral · category OB006N

6 suppliers30 claims16,835 services$0.27 avg. paid by Medicare

Walker, folding, wheeled, adjustable or fixed height E0143

DME-Other DME · category DE000N

9 suppliers30 claims30 services$41.27 avg. paid by Medicare

Seat attachment, walker E0156

DME-Other DME · category DE000N

8 suppliers24 claims24 services$15.50 avg. paid by Medicare

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260

DME-Hospital Beds · category DB000N

3 suppliers185 claims185 services$37.92 avg. paid by Medicare

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, without mattress E0261

DME-Hospital Beds · category DB000N

2 suppliers19 claims19 services$43.57 avg. paid by Medicare

Mattress, foam rubber E0272

DME-Hospital Beds · category DB000N

1 supplier11 claims28 services$11.03 avg. paid by Medicare

Powered pressure-reducing air mattress E0277

DME-Hospital Beds · category DB000N

1 supplier19 claims19 services$86.12 avg. paid by Medicare

Hospital bed, semi-electric (head and foot adjustment), without side rails, without mattress E0295

DME-Hospital Beds · category DB000N

2 suppliers14 claims32 services$52.64 avg. paid by Medicare

Bed side rails, half length E0305

DME-Hospital Beds · category DB000N

2 suppliers15 claims60 services$7.55 avg. paid by Medicare

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

6 suppliers159 claims159 services$13.86 avg. paid by Medicare

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466

DME-Other DME · category DE005N

3 suppliers101 claims101 services$775.91 avg. paid by Medicare

Nebulizer, with compressor E0570

DME-Other DME · category DE000N

5 suppliers114 claims114 services$2.74 avg. paid by Medicare

Patient lift, hydraulic or mechanical, includes any seat, sling, strap(s) or pad(s) E0630

DME-Other DME · category DE000N

4 suppliers47 claims47 services$35.86 avg. paid by Medicare

Manual wheelchair accessory, wheel lock brake extension (handle), each E0961

DME-Wheelchairs · category DD021N

4 suppliers11 claims21 services$18.82 avg. paid by Medicare

Manual wheelchair accessory, anti-tipping device, each E0971

DME-Wheelchairs · category DD021N

8 suppliers15 claims29 services$29.02 avg. paid by Medicare

Transport chair, adult size, patient weight capacity up to and including 300 pounds E1038

DME-Other DME · category DE000N

1 supplier14 claims14 services$8.72 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

9 suppliers290 claims290 services$58.32 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

5 suppliers89 claims93 services$30.37 avg. paid by Medicare

General use wheelchair seat cushion, width less than 22 inches, any depth E2601

DME-Wheelchairs · category DD021N

7 suppliers17 claims17 services$32.66 avg. paid by Medicare

General use wheelchair back cushion, width less than 22 inches, any height, including any type mounting hardware E2611

DME-Wheelchairs · category DD021N

7 suppliers15 claims15 services$149.83 avg. paid by Medicare

Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg J7613

DME-Drugs Administered Through DME · category DG006N

6 suppliers13 claims2,992 services$0.03 avg. paid by Medicare

Albuterol, up to 2.5 mg and ipratropium bromide, up to 0.5 mg, fda-approved final product, non-compounded, administered through dme J7620

DME-Drugs Administered Through DME · category DG006N

3 suppliers25 claims2,400 services$0.10 avg. paid by Medicare

Standard wheelchair K0001

DME-Wheelchairs · category DD000N

11 suppliers249 claims277 services$17.18 avg. paid by Medicare

Lightweight wheelchair K0003

DME-Wheelchairs · category DD000N

3 suppliers24 claims24 services$23.61 avg. paid by Medicare

High strength, lightweight wheelchair K0004

DME-Wheelchairs · category DD000N

3 suppliers14 claims14 services$32.28 avg. paid by Medicare

Elevating leg rests, pair (for use with capped rental wheelchair base) K0195

DME-Wheelchairs · category DD021N

4 suppliers63 claims67 services$7.37 avg. paid by Medicare

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

3 suppliers88 claims88 services$189.56 avg. paid by Medicare

Receiver (monitor), dedicated, for use with therapeutic glucose continuous monitor system K0554

DME-Other DME · category DE017N

2 suppliers22 claims22 services$203.14 avg. paid by Medicare

Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing K0738

DME-Oxygen and Supplies · category DC000N

2 suppliers24 claims24 services$29.33 avg. paid by Medicare

Repair or nonroutine service for durable medical equipment other than oxygen equipment requiring the skill of a technician, labor component, per 15 minutes K0739

DME-Other DME · category DE000N

4 suppliers16 claims98 services$20.05 avg. paid by Medicare

Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513

DME-Other DME · category DE000N

7 suppliers29 claims29 services$25.17 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mary Gessner-peterson's NPI number?

The NPI number for Mary Gessner-peterson is 1861662884. It was assigned to this individual provider in the NPPES registry on March 5, 2008.

Where is Mary Gessner-peterson located?

Mary Gessner-peterson practices at 2710 Alpine Blvd # 205, Alpine, CA 91901. The listed phone number is (619) 326-4445.

What is Mary Gessner-peterson's specialty?

The primary specialty registered for this NPI is Emergency Medicine, specializing in Emergency Medical Services, with taxonomy code 207PE0004X.

Is Mary Gessner-peterson enrolled in Medicare?

Yes. Mary Gessner-peterson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Mary Gessner-peterson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Gessner-peterson reassigns Medicare benefits to 4 organizations: Mary Gessner-Peterson Medical Group, Inc (Alpine, CA), Alvarado Emergency Medical Associates, Inc. (San Diego, CA), Datnguyen MD Inc (San Diego, CA) and Team Physicians Of Northern California Medical Group Inc (Pleasanton, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mary Gessner-peterson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mary Gessner-peterson was last updated on September 26, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.