DR. WALTER K NAHM M.D., PHD.
NPI 1467447284
Dermatology in San Diego, CA

Q: What is Walter Nahm's NPI number?

The NPI number for Walter Nahm is 1467447284. It was assigned to this individual provider in the NPPES registry on September 19, 2005.

Q: What is Walter Nahm's specialty?

The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.

Q: When was this NPI record last updated?

The NPPES record for Walter Nahm was last updated on July 20, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.

Active since September 19, 2005PECOS EnrolledAccepts Medicare AssignmentCLIA 05D1042177 · Certificate of Compliance

100/100

CMS Quality Rating

7695 CARDINAL COURT, SUITE 200, SAN DIEGO, CA 92123(858) 278-8835(858) 386-4776 Get Directions Write a Review

NPPES record last updated: July 20, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About Dr. Walter K Nahm M.d., Phd. NPPES

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

DR. WALTER K NAHM M.D., PHD. (NPI 1467447284) is an individual dermatology provider in San Diego, California, licensed in California (A78569) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS, holds a CLIA Certificate of Compliance certificate valid through February 5, 2028, and is a graduate of Baylor College Of Medicine (1998).

NPPES Registry Identity

NPI1467447284

Entity TypeIndividualMale

Primary Taxonomy207N00000X

Provider Legal NameDR. WALTER K NAHMCredential: M.D., PHD.

Location Address7695 CARDINAL COURT, SUITE 200San Diego, CA 92123-3305

Mailing Address7695 Cardinal Ct, Suite 200San Diego, CA 92123-3357 · (858) 278-8835 · Fax (858) 386-4776

Phone(858) 278-8835

Fax(858) 386-4776

Sole ProprietorYes

Medical School CMSBaylor College Of MedicineGraduated 1998

Enumeration DateSeptember 19, 2005

Last NPPES UpdateJuly 20, 2021

NPPES CertifiedJuly 20, 2021

✔ NPI 1467447284 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians

Taxonomy Code207N00000X

License✔ Licensed in CA · A78569

Definition

A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.

Also ListedDermatology · MOHS-Micrographic SurgeryTaxonomy 207ND0101X · License A78569 (CA)

Also ListedDermatology · Procedural DermatologyTaxonomy 207NS0135X · License A78569 (CA)

7695 CARDINAL COURT, San Diego, CA 92123

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Walter K Nahm M.d., Phd. 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 ID2466352307

PECOS Enrollment IDI20040112000201

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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Compliance 05D1042177

Walter K Nahm, MD, Phd · San Diego, CA

Active · expires Feb 5, 2028

CLIA Number05D1042177

Laboratory TypePhysician Office

Certificate Effective DateFebruary 6, 2026

Certificate Expiration DateFebruary 5, 2028

Laboratory DirectorWalter K. Nahm MD

Laboratory Phone(858) 278-8835

Laboratory LocationWalter K Nahm, MD, Phd7695 Cardinal Ct, Ste 200, San Diego, CA 92123

CLIA data matches this NPI record on: Address Phone

This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.

Areas of Expertise CMS Part B claims 44

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.

Theraskin, per square centimeter Q4121

Theraskin is a type of skin graft used to treat wounds that aren't healing properly. It's made from human skin and helps promote your body's own healing process. This service is often measured per square centimeter, which refers to the size of the graft needed for your wound.

5,503 services39 patients

Revita, per square centimeter Q4180

Revita is a non-surgical treatment aimed at stimulating hair growth. It uses advanced technology to target individual square centimeters of the scalp, promoting thicker, healthier hair. This procedure is comfortable, safe, and requires no downtime.

2,939 services43 patients

Cogenex amniotic membrane, per square centimeter Q4229

Cogenex amniotic membrane is a treatment option involving a thin tissue layer. This tissue, derived from the amniotic sac, is applied to areas needing healing or repair. Itâ€™s rich in growth factors and proteins, promoting faster, efficient recovery.

2,170 services50 patients

Amnioexcel, amnioexcel plus or biodexcel, per square centimeter Q4137

AmnioExcel and BioDExel are advanced wound care products. They are derived from human amniotic membrane and fluid, known for their healing properties. These products help in wound management by promoting tissue growth, reducing inflammation, and preventing scarring.

1,896 services39 patients

Puraply am, per square centimeter Q4196

Puraply AM is a type of wound dressing applied to help heal complex wounds. It's made from a special material that helps control bacteria and promote healing. The size of the dressing is measured per square centimeter to fit the wound size.

1,809 services63 patients

Epifix, per square centimeter Q4186

Epifix is an advanced wound care treatment, derived from human placental tissue. It helps to promote healing by providing a protective barrier and supplying growth factors. Each square centimeter refers to the size of the Epifix graft needed for your specific wound.

1,738 services66 patients

Pathology examination of tissue using a microscope, intermediate complexity 88305

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

1,299 services271 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.

930 services335 patients

Destruction of precancer skin growth, 15 or more growths 17004

This procedure involves removing 15 or more precancerous skin growths to prevent them from developing into cancer. It's done using various methods like freezing, creams, or minor surgery. The goal is to protect your health by stopping cancer before it starts.

861 services334 patients

Destruction of skin growth, 15 or more growths 17111

"Destruction of skin growth" refers to a procedure where unwanted skin growths, such as warts or moles, are removed. In this case, 15 or more growths are treated. Techniques may include freezing, burning, or laser therapy. It's a safe, quick process to improve skin health.

860 services333 patients

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

728 services48 patients

Treatment of inflammatory skin disease using laser, more than 500.0 sq cm 96922

This treatment involves using laser technology to manage inflammatory skin conditions over a large area (more than 500.0 sq cm). The laser targets and treats the disease, reducing inflammation and promoting skin healing. This is a safe, non-invasive procedure.

643 services61 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.

490 services245 patients

Application of skin substitute graft to wound of trunk, arms, or legs, 25.0 sq cm or less of wound 100.0 sq cm or less 15271

This procedure involves applying a skin substitute graft to a wound on the trunk, arms, or legs. The graft, a lab-grown skin, is used to cover a wound area of 25.0 sq cm or less, within a total wound area of 100.0 sq cm or less. It aids in healing and regeneration.

464 services61 patients

Preparation of skin graft site of trunk, arms, or legs, 100.0 sq cm or 1% body area for infants and children, or less 15002

This procedure involves preparing a specific area of the body (trunk, arms, or legs) for a skin graft. The area is cleaned and any dead tissue is removed to ensure a successful graft. The procedure covers an area of 100.0 sq cm or 1% of a child's body.

442 services58 patients

Corplex, per square centimeter Q4232

Corplex is a type of medical dressing used to cover and protect wounds. It helps to promote healing by keeping the wound moist, clean, and free from infection. The size of the dressing needed is measured in square centimeters to fit the wound precisely.

414 services21 patients

Application of skin substitute graft to wound of face, scalp, eyelids, mouth, neck, ears, around eyes, genitals, hands, feet, fingers, or toes, 25.0 sq cm or less of wound 100.0 sq cm or less 15275

This procedure involves applying a skin substitute graft to a wound that's 25.0 sq cm or less, located on areas such as the face, scalp, eyelids, mouth, neck, ears, around eyes, hands, feet, fingers, or toes. The graft aids in wound healing and tissue regeneration.

339 services51 patients

Preparation of skin graft site of face, scalp, eyelids, mouth, neck, ears, around eyes, genitals, hands, feet, fingers, or toes, 100.0 sq cm or 1% body area for infants and children, or less 15004

This procedure involves preparing a specific area of your body, such as the face, scalp, neck, or extremities, for a skin graft. A skin graft is a surgical procedure where healthy skin is transferred to an area of the body that has lost skin. This preparation ensures the graft will take hold effectively.

334 services49 patients

Shaving of skin growth of body, arms, or legs, more than 2.0 cm 11303

This procedure involves the removal of a skin growth on your body, arms, or legs that is over 2.0 cm. A special tool is used to shave off the growth, often under local anesthesia. It's a routine, safe process to maintain skin health.

223 services141 patients

Incision biopsy, first skin growth 11106

An incision biopsy involves taking a small sample of a skin growth for further examination. A local anesthetic is used to numb the area, then a portion of the growth is removed using a surgical knife. This helps identify the nature of the growth.

210 services132 patients

Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, more than 2.0 cm 11313

This procedure involves the careful removal of a skin growth on the face, ears, eyelids, nose, lips, or mouth that is larger than 2.0 cm. The process, known as shaving, is done under local anesthesia to ensure comfort. It's a common, safe procedure.

110 services73 patients

Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks 17311

This procedure involves the careful removal of a growth from the head, neck, hands, or feet. The removed tissue, divided into 1-5 blocks, is then examined under a microscope to study its characteristics and determine the nature of the growth.

100 services44 patients

Repair of wound of trunk by transferring skin, 10.1-30.0 sq cm 14001

This procedure involves treating a wound on the body by moving skin from one area to another. The transferred skin, ranging from 10.1-30.0 sq cm, helps cover and heal the wound. It's a common way to promote healing for large or deep wounds.

98 services59 patients

Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.1-30.0 sq cm 14041

This procedure involves repairing a wound on specified body areas by transferring skin from another part of the body. The transferred skin, measuring between 10.1 to 30.0 square cm, aids in healing the wound and restoring the skin's normal function.

97 services63 patients

Injection into skin growth, more than 7 growths 11901

This procedure involves injecting medication into multiple skin growths (more than 7) to either shrink them or eliminate them. It's a safe, minimally invasive method often used for benign growths. Comfort during the process is ensured.

91 services48 patients

Shaving of skin growth of scalp, neck, hands, feet, or genitals, more than 2.0 cm 11308

This procedure involves the careful removal of a skin growth larger than 2.0 cm, located on the scalp, neck, hands, or feet. The area is first numbed, then the growth is gently shaved off. This is a safe, routine process to ensure skin health.

90 services69 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.

79 services79 patients

Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks 17313

This procedure involves the removal of a growth from your trunk, arms, or legs. The removed tissue, divided into 1-5 blocks, is then examined under a microscope to identify any abnormalities. This helps in diagnosing and planning further treatment.

70 services29 patients

Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks 17312

This procedure involves the careful removal of abnormal growths from the head, neck, hands, or feet. The removed tissues, divided into 1-5 blocks, are then examined under a microscope to identify any irregularities. The process may be carried out in multiple stages for thorough examination.

65 services32 patients

Shaving of skin growth of body, arms, or legs, 1.1-2.0 cm 11302

This procedure involves the careful removal of a skin growth on your body, arms, or legs. The growth is between 1.1 and 2.0 cm. A special tool is used to shave off the growth, which is a quick and relatively painless process.

63 services45 patients

Biopsy of related skin growth, first growth 11102

A biopsy of a skin growth involves taking a small sample of the growth to examine it under a microscope. This helps determine if the growth is harmful. The procedure is typically quick, with minimal discomfort. It's a crucial step in ensuring your skin's health.

56 services45 patients

Pathology examination of specimen during surgery, first tissue block 88331

A pathology examination during surgery involves the immediate analysis of a removed tissue sample. This helps the surgeon make decisions during your operation. The "first tissue block" refers to the initial sample examined. It's a vital step to ensure your health.

51 services41 patients

Complicated or multiple drainage of skin abscess 10061

This procedure involves draining one or more skin abscesses, which are pockets of pus that form due to an infection. The process includes making a small cut on the abscess, removing the pus, and cleaning the area to promote healing and prevent further infection.

44 services40 patients

Removal and microscopic exam of growth of trunk, arms, or legs, each additional stage, 1-5 tissue blocks 17314

This procedure involves removing growths from the trunk, arms, or legs. The removed tissues, divided into 1-5 blocks, are then examined under a microscope to identify any abnormalities. This aids in diagnosing and treating your condition effectively.

40 services20 patients

Complicated repair of wound of trunk, 2.6-7.5 cm 13101

This service involves the intricate repair of a wound on your body's main structure, between your neck and limbs. The wound measures 2.6-7.5 cm. The procedure includes deep-layer stitching and may involve repairing damaged tissue.

35 services28 patients

Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm 11312

This procedure involves the careful removal of a skin growth on the face, ears, eyelids, nose, lips, or mouth. The growth being treated is between 1.1 and 2.0 cm in size. The process is typically quick, with minimal discomfort, and aids in maintaining skin health.

32 services27 patients

Punch biopsy, first skin growth 11104

A punch biopsy is a procedure where a small, circular tool is used to remove a sample of skin tissue. This is usually done to test a skin growth for potential issues. You may feel a pinch, but discomfort is minimal. The area heals quickly.

30 services24 patients

Repair of wound of scalp, arms, or legs by transferring skin, 10.1-30.0 sq cm 14021

This procedure involves repairing a wound on your scalp, arm, or leg by moving skin from another part of your body. The skin transferred will cover an area between 10.1 to 30.0 square cm. This helps promote healing and reduce scarring.

25 services21 patients

Punch biopsy, each additional skin growth 11105

A punch biopsy is a procedure where a small, circular tool removes a sample of your skin growth. This allows for testing to identify the nature of the growth. If there are multiple growths, each additional one may also need a biopsy.

21 services16 patients

Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.0 sq cm or less 14040

This procedure involves repairing a wound on various body parts by transferring skin from another area. The transferred skin, up to 10.0 sq cm, helps to cover the wound, promoting healing and reducing scarring. It's a common method for treating larger or deeper wounds.

21 services21 patients

Complicated repair of wound of trunk, each additional 5.0 cm or less 13102

This procedure involves the complex repair of a wound located on the body's trunk. It's performed for each additional wound up to 5.0 cm in size. The process includes cleaning, stitching, and dressing the wound to promote healing and prevent infections.

18 services13 patients

Removal of noncancer skin growth of body, arms, or legs, 2.1-3.0 cm 11403

This is a procedure where a noncancerous skin growth, sized 2.1-3.0 cm, on the body, arms, or legs is removed. It's typically done under local anesthesia. The process involves cutting out the growth and stitching the skin back together. The aim is to eliminate discomfort and prevent potential health issues.

14 services13 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

14 services11 patients

Repair of wound of trunk by transferring skin, 10.0 sq cm or less 14000

This procedure involves repairing a wound on your body's trunk area (chest, abdomen, or back) using a skin graft. A piece of healthy skin, typically 10.0 square cm or less, is taken from another area of your body and transplanted to the wound site to aid healing.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92123 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

$76.87 typical visit price

range $20.62 – $151.42

Typical copayment $19.21 (range $5.15 – $37.85)

Most-billed visit code 99213

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.

100/100

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

Individually scored

Quality

100

Improvement Activities

Reported Quality Measures

Advance Care Plan

100%664 patients5/55-star benchmark: 100%

Melanoma: Continuity of Care - Recall System

100%74 patients

Melanoma: Coordination of Care

100%22 patients

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Patients combinedPopulations: 90% · 1,617 patients

Patients screened: 93% · 1,617 patients

64%104 patients3/55-star benchmark: 100%

Preventive Care and Screening: Unhealthy Alcohol Use: Screening & Brief Counseling

Patients combinedPopulations: 93% · 1,617 patients

Patients screened: 97% · 1,617 patients

50%173 patients

Psoriasis: Clinical Response to Systemic Medications

100%27 patients

Tobacco Use and Help with Quitting Among Adolescents

100%78 patients5/55-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

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

Gradient compression wrap, non-elastic, below knee, 30-50 mm hg, each A6545

DME-Medical/Surgical Supplies · category DA000N

1 supplier16 claims32 services$82.18 avg. paid by Medicare

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

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ATUL KUMAR JAIN M.D.

Ophthalmology

7695 CARDINAL COURT, SUITE 100
SAN DIEGO, CA 92123

San Diego County (858) 609-7100

CONTEMPORARY OB GYN A MEDICAL CORPORATION

Obstetrics & Gynecology

7695 CARDINAL COURT, SUITE 370
SAN DIEGO, CA 92123

San Diego County (858) 277-1599

ANMAR AFIF MANSOUR M.D.

Obstetrics & Gynecology

7695 CARDINAL COURT, SUITE 370
SAN DIEGO, CA 92123

San Diego County (858) 277-1599

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 Walter Nahm's NPI number?

The NPI number for Walter Nahm is 1467447284. It was assigned to this individual provider in the NPPES registry on September 19, 2005.

Where is Walter Nahm located?

Walter Nahm practices at 7695 Cardinal Court Suite 200, San Diego, CA 92123. The listed phone number is (858) 278-8835.

What is Walter Nahm's specialty?

The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.

Is Walter Nahm enrolled in Medicare?

Yes. Walter Nahm 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.

Does Walter Nahm hold a CLIA laboratory certificate?

Yes. A Certificate of Compliance (number 05D1042177) is associated with this NPI, valid through February 5, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Walter Nahm was last updated on July 20, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.