LISA HERTZ MD
NPI 1639237720
Internal Medicine - Gastroenterology in Los Alamitos, CA

Q: What is the provider's specialty?

The provider's specialty is Internal Medicine with taxonomy code 207RG0100X and a focus in Gastroenterology.

Active since December 04, 2006PECOS EnrolledAccepts Medicare Assignment

75/100

CMS Quality Rating

4772 KATELLA AVE, #200, LOS ALAMITOS, CA 90720(562) 596-5552(562) 596-5340 Get Directions Write a Review

NPPES record last updated: August 13, 2025. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Aug 13, 2025, Mar 15, 2017, Feb 1, 2017 (3 updates tracked since 2017).

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About Lisa Hertz Md NPPES

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

LISA HERTZ MD (NPI 1639237720) is an individual gastroenterology provider in Los Alamitos, California, licensed in California (G59291) and active in the NPI registry since December 2006. She is enrolled in Medicare PECOS and is a graduate of Harvard Medical School (1984).

NPPES Registry Identity

NPI1639237720

Entity TypeIndividualFemale

Primary Taxonomy207RG0100X

Provider Legal NameLISA HERTZCredential: MD

Location Address4772 KATELLA AVE, #200Los Alamitos, CA 90720-2600

Mailing Address4772 Katella Ave, #200Los Alamitos, CA 90720-2600 · (562) 596-5552 · Fax (562) 596-5340

Phone(562) 596-5552

Fax(562) 596-5340

Sole ProprietorNo

Medical School CMSHarvard Medical SchoolGraduated 1984

Enumeration DateDecember 4, 2006

Last NPPES UpdateAugust 13, 20253 updates tracked since enumeration

NPPES CertifiedAugust 13, 2025

✔ NPI 1639237720 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in CA · G59291

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

4772 KATELLA AVE, Los Alamitos, CA 90720

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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

Lisa Hertz Md 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 ID1052350915

PECOS Enrollment IDI20050502000315

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.

Areas of Expertise CMS Part B claims 13

Services this provider delivered to Medicare fee-for-service patients, from the 2024 & 2026 CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

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.

354 services231 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.

345 services119 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.

203 services170 patients

Ultrasound scan of organ tissue for measuring elasticity 76981

An ultrasound scan of organ tissue measures elasticity, or flexibility. This non-invasive procedure uses sound waves to create images of the inside of your body. It helps in assessing the health of various organs by detecting changes in their stiffness or softness.

82 services62 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

61 services61 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

52 services51 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

50 services50 patients

Special stained specimen slides to identify organisms including interpretation and report 88312

This service involves coloring specimen slides in a special way to help identify organisms. The colors make different parts of the organism stand out. Afterward, a detailed interpretation and report on the findings are provided.

49 services49 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.

47 services47 patients

Stool analysis for blood, by peroxidase activity 82272

A stool analysis for blood, by peroxidase activity, is a test to detect blood in your stool. This test helps identify bleeding in the digestive tract. It involves collecting a stool sample, which is then checked for the presence of blood using a chemical reaction.

37 services33 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

30 services23 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

22 services22 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.

15 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90720 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

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

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.

75/100

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

Scored as part of a group practice

Reported Quality Measures

Appropriate Follow-Up Interval for Normal Colonoscopy in Average Risk Patients

Percentage of patients aged 50 to 75 years of age receiving a screening colonoscopy without biopsy or polypectomy who had a recommended follow-up interval of at least 10 years for repeat colonoscopy documented in their colonoscopy report

93%44 patients

Appropriate indication for colonoscopy

Percentage of colonoscopy procedures performed for an indication that is included in a published standard list of appropriate indications and the indication is documented

93%332 patients4/55-star benchmark: 99%

Appropriate management of anticoagulation in the peri-procedural period rate - EGD

Percentage of patients undergoing an EGD on an anti-platelet agent or an anticoagulant who leave the endoscopy unit with instructions for management of this medication

98%57 patients4/55-star benchmark: 100%

Clinical Information Reconciliation

For at least one transition of care or referral received or patient encounter in which the MIPS eligible clinician has never before encountered the patient, the MIPS eligible clinician performs clinical information reconciliation.

1%248 patients1/55-star benchmark: 100%

e-Prescribing

At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.

68%435 patients3/55-star benchmark: 100%

Provide Patient Access

For at least one unique patient seen by the MIPS eligible clinician: (1) The patient (or the patient authorized representative) is provided timely access to view online, download, and transmit his or her health information; and (2) The MIPS eligible clinician…

95%445 patients4/55-star benchmark: 100%

Secure Messaging

For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of certified EHR technology to the patient (or the patient-authorized representative), or in…

21%445 patients2/55-star benchmark: 77%

Send a Summary of Care

For at least one transition of care or referral, the MIPS eligible clinician that transitions or refers their patient to another setting of care or health care provider-(1) creates a summary of care record using certified EHR technology; and (2)…

13%31 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.

Other Providers at the Same Location NPPES 7

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

CANDIA GAY SEIBLY OTR/L

Specialist

4772 KATELLA AVE, SUITE 100
LOS ALAMITOS, CA 90720

Orange County (562) 430-8700

MINDFUL CHIROPRACTIC & WELLNESS

Chiropractor

4772 KATELLA AVE, STE. # 102
LOS ALAMITOS, CA 90720

Orange County (562) 799-9150

CARRIE HUANG

Acupuncturist

4772 KATELLA AVE, #102
LOS ALAMITOS, CA 90720

Orange County (562) 799-9150

STACEY MARTINELLI

Occupational Therapist

4772 KATELLA AVE, SUITE 100
LOS ALAMITOS, CA 90720

Orange County (562) 430-8700

KEVIN CHAN CHIROPRACTIC CORPORATION

Chiropractor

4772 KATELLA AVE, SUITE 102
LOS ALAMITOS, CA 90720

Orange County (562) 799-9150

COMPREHENSIVE GI CARE, A PROFESSIONAL MEDICAL GROUP, INC.

Internal Medicine (Gastroenterology)

4772 KATELLA AVE, #200
LOS ALAMITOS, CA 90720

Orange County (562) 596-5552

KATHERINE BECKWITH PA-C

Physician Assistant

4772 KATELLA AVE, ST 200
LOS ALAMITOS, CA 90720

Orange County (562) 596-5552

LISA HERTZ MD
NPI 1639237720
Internal Medicine - Gastroenterology in Los Alamitos, CA

About Lisa Hertz Md NPPES

NPPES Registry Identity

Specialties & Licenses

Medicare Participation & PECOS CMS

Medicare Enrollment Status

Areas of Expertise CMS Part B claims 13

Physician Visit Costs CMS claims · ZIP area

Medicare Quality Performance CMS QPP · MIPS

Reported Quality Measures

Other Providers at the Same Location NPPES 7

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