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DR. PETER CHANG M.D.
NPI 1619995610
Internal Medicine - Gastroenterology in New York, NY

Active since July 17, 2006Opted out of Medicare · through Jan 1, 2028CLIA 33D1016048 · Waiver
1049 PARK AVE, NEW YORK, NY 10028(212) 427-9888(212) 427-2394 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 30, 2026.

About Dr. Peter Chang M.d. NPPES

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

DR. PETER CHANG M.D. (NPI 1619995610) is an individual gastroenterology provider in New York, New York, licensed in New York (207173) and active in the NPI registry since July 2006. He has opted out of Medicare through January 1, 2028 and remains eligible to order and refer, holds a CLIA Waiver certificate valid through August 18, 2027, and is affiliated with Nyack Hospital.

NPPES Registry Identity

NPI1619995610
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. PETER CHANGCredential: M.D.
Location Address1049 PARK AVENew York, NY 10028-1061
Mailing Address1049 Park AveNew York, NY 10028-1061 · (212) 427-9888 · Fax (212) 427-2394
Phone(212) 427-9888
Fax(212) 427-2394
Sole ProprietorYes
Medical School CMSIcahn School Of Medicine At Mount SinaiGraduated 1996
Enumeration DateJuly 17, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1619995610 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 NY · 207173
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.
1049 PARK AVE, New York, NY 10028
Open in Google Maps ↗

Other Identifiers 2

Medicare UPING89602
Medicare ID-Type UnspecifiedW8C601NY · Individual Medicare #

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Peter Chang M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from January 1, 2026 through January 1, 2028.

Opt-Out Effective DateJanuary 1, 2026
Opt-Out In Effect ThroughJanuary 1, 2028Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

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 Waiver 33D1016048

Peter K Chang MD PLLC · New York, NY
Active · expires Aug 18, 2027
CLIA Number33D1016048
Laboratory TypePhysician Office
Certificate Effective DateAugust 19, 2025
Certificate Expiration DateAugust 18, 2027
Laboratory DirectorPeter K. Chang MD
Laboratory Phone(212) 427-9888
Laboratory LocationPeter K Chang MD PLLC1049 Park Avenue, New York, NY 10028
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 14

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.

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.
249 services95 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.
136 services120 patients
Special stained specimen slides to examine tissue including interpretation and report 88313
Special stained specimen slides are used to examine tissue samples. This involves applying special dyes to the tissue, which helps to highlight certain features under a microscope. The findings are then interpreted and a report is provided. This can aid in diagnosing various health conditions.
105 services31 patients
Special stained specimen slides to examine tissue, initial procedure 88342
This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.
74 services28 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.
51 services47 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.
49 services23 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Nyack Hospital

Acute Care Hospitals · Nyack, NY
2/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number330104
Location160 North Midland AvenueNyack, NY 10960 · Rockland County
Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10028 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
$150.24 typical visit price
range $65.69 – $198.19
Typical copayment $37.56 (range $16.42 – $49.54)
Most-billed visit code 99204
Established Patient
$114.88 typical visit price
range $21.20 – $160.66
Typical copayment $28.72 (range $5.30 – $40.16)
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.

Reported Quality Measures

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
90%648 patients4/55-star benchmark: 99%
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 9

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

STEVEN MANDEL, MD PC
Psychiatry & Neurology (Neurology)
1049 PARK AVE
NEW YORK, NY 10028
New York County (212) 348-3009
DR. MANISH ZINZUVADIA M.D.
Psychiatry & Neurology (Psychiatry)
1049 PARK AVE, UNIT 1B
NEW YORK, NY 10028
New York County (212) 289-2299
ANTHONY S BORCICH M.D., P.C.
Internal Medicine (Gastroenterology)
1049 PARK AVE
NEW YORK, NY 10028
New York County (212) 722-8400
ANTHONY STEVEN BORCICH M.D.
Internal Medicine (Gastroenterology)
1049 PARK AVE
NEW YORK, NY 10028
New York County (212) 722-8400
PINNACLE MEDICAL GROUP
Internal Medicine (Gastroenterology)
1049 PARK AVE
NEW YORK, NY 10028
New York County (212) 427-9888
HARRY WEINRAUCH, M.D., PC
Internal Medicine (Cardiovascular Disease)
1049 PARK AVE
NEW YORK, NY 10028
New York County (212) 348-0222
JEROME BARRY SHAPIRO M.D.
Internal Medicine (Cardiovascular Disease)
1049 PARK AVE
NEW YORK, NY 10028
New York County (917) 583-0176
DR. STEVEN MANDEL M.D.
Psychiatry & Neurology (Neurology)
1049 PARK AVE
NEW YORK, NY 10028
New York County (212) 348-3009

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 Peter Chang's NPI number?

The NPI number for Peter Chang is 1619995610. It was assigned to this individual provider in the NPPES registry on July 17, 2006.

Where is Peter Chang located?

Peter Chang practices at 1049 Park Ave, New York, NY 10028. The listed phone number is (212) 427-9888.

What is Peter Chang's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Peter Chang enrolled in Medicare?

No. Peter Chang has opted out of Medicare through January 1, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

Does Peter Chang hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 33D1016048) is associated with this NPI, valid through August 18, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

Is Peter Chang affiliated with any hospitals?

According to CMS data, Peter Chang is affiliated with Nyack Hospital.

When was this NPI record last updated?

The NPPES record for Peter Chang was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.