CHUAN-HSIN CHANG M.D.
NPI 1033377841
Internal Medicine - Endocrinology, Diabetes & Metabolism in San Francisco, CA

Q: What is Chuan-hsin Chang's NPI number?

The NPI number for Chuan-hsin Chang is 1033377841. It was assigned to this individual provider in the NPPES registry on May 28, 2008.

Q: What is Chuan-hsin Chang's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Q: When was this NPI record last updated?

The NPPES record for Chuan-hsin Chang was last updated on January 18, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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 May 28, 2008PECOS EnrolledAccepts Medicare Assignment

1520 STOCKTON ST, SAN FRANCISCO, CA 94133(415) 391-9686 Get Directions Write a Review

NPPES record last updated: January 18, 2017. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Chuan-hsin Chang M.d. NPPES

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

CHUAN-HSIN CHANG M.D. (NPI 1033377841) is an individual endocrinology, diabetes & metabolism provider in San Francisco, California, licensed in California (A110086) and active in the NPI registry since May 2008. She is enrolled in Medicare PECOS and is a graduate of R Franklin University Of Med & Sci/chicago Medical School (2008).

NPPES Registry Identity

NPI1033377841

Entity TypeIndividualFemale

Primary Taxonomy207RE0101X

Provider Legal NameCHUAN-HSIN CHANGCredential: M.D.

Location Address1520 STOCKTON STSan Francisco, CA 94133-3354

Mailing Address1520 Stockton StSan Francisco, CA 94133-3354

Phone(415) 391-9686

Sole ProprietorNo

Medical School CMSR Franklin University Of Med & Sci/chicago Medical SchoolGraduated 2008

Enumeration DateMay 28, 2008

Last NPPES UpdateJanuary 18, 2017

✔ NPI 1033377841 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians

Taxonomy Code207RE0101X

License✔ Licensed in CA · A110086

Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

Also ListedInternal MedicineTaxonomy 207R00000X · License A110086 (CA)

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

1520 STOCKTON ST, San Francisco, CA 94133

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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

Chuan-hsin Chang M.d. 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 ID2163608035

PECOS Enrollment IDI20110511000334

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 Chuan-hsin Chang reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

North East Medical Services

Same address

Federally Qualified Health Center (FQHC)

1520 STOCKTON STREET
San Francisco, CA 94133

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

NPI 1518911304 (415) 391-9686

San Mateo County

8.3 mi

Community/Behavioral Health

375 89TH ST
Daly City, CA 94015

Reassigned Medicare billing, California enrollment
Medicare enrollment name: County Of San Mateo
Also billed through NPI 1831268580 (California)
597 clinicians in this Medicare group

NPI 1053367854 (650) 301-8650

County Of Santa Clara

30 mi

Clinic/Center

2741 MIDDLEFIELD RD
Palo Alto, CA 94306

Reassigned Medicare billing, California enrollment
Also billed through NPI 1043354020 (California)
2,460 clinicians in this Medicare group

NPI 1285228080 (408) 885-5000

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 6

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.

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.

224 services134 patients

Blood test, basic group of blood chemicals (calcium, total) 80048

A basic group blood test measures the levels of certain chemicals in your blood, including calcium. This helps assess your overall health and detect potential problems. The procedure involves drawing a small amount of blood from your arm, which is then analyzed in a lab.

180 services106 patients

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

153 services81 patients

Thyroxine (thyroid chemical), free 84439

The Thyroxine (thyroid chemical), free test is a blood test that measures the level of free T4 in your body. T4 is a hormone produced by your thyroid gland and is essential for growth and metabolism. If your T4 levels are too high or too low, it could indicate a thyroid disorder.

69 services31 patients

Blood test, thyroid stimulating hormone (tsh) 84443

A TSH blood test measures the level of thyroid stimulating hormone in your body. This hormone is produced by the pituitary gland and regulates how your thyroid works. It's a simple procedure where a small amount of blood is drawn from your arm for analysis.

69 services31 patients

Vitamin d-3 level 82306

A Vitamin D-3 level test measures the amount of Vitamin D-3, a crucial nutrient, in your body. This test helps identify if your levels are too low or too high. Low levels may lead to bone weakness, while high levels could harm your kidneys. It's a simple blood test.

43 services34 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94133 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

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

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.

Referred Medical Equipment & Supplies CMS DME claims 2

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

11 suppliers30 claims169 services$3.76 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

10 suppliers18 claims50 services$0.83 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 20

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

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