DR. AN CHIH HSIEH M.D., MPH
NPI 1356877377
Family Medicine in Lancaster, CA

Q: What is An Chih Hsieh's NPI number?

The NPI number for An Chih Hsieh is 1356877377. It was assigned to this individual provider in the NPPES registry on May 11, 2017. The provider is also known as Dr. Alex Hsieh M.D., Mph.

Q: What is An Chih Hsieh's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for An Chih Hsieh was last updated on November 26, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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 11, 2017PECOS EnrolledAccepts Medicare Assignment

43322 GINGHAM AVE, LANCASTER, CA 93535(661) 874-4050 Get Directions Write a Review

NPPES record last updated: November 26, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 26, 2025, Jun 25, 2021, Jun 4, 2021 and 1 more (4 updates tracked since 2017).

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About Dr. An Chih Hsieh M.d., Mph NPPES

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

DR. AN CHIH HSIEH M.D., MPH (NPI 1356877377) is an individual family medicine provider in Lancaster, California, licensed in California (A171316) and active in the NPI registry since May 2017. He is enrolled in Medicare PECOS and is a graduate of Virginia Commonwealth University, School Of Medicine (2014).

NPPES Registry Identity

NPI1356877377

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameDR. AN CHIH HSIEHCredential: M.D., MPH

Location Address43322 GINGHAM AVELancaster, CA 93535-4576

Mailing Address43322 Gingham AveLancaster, CA 93535-4576 · (661) 874-4050

Phone(661) 874-4050

Sole ProprietorNo

Medical School CMSVirginia Commonwealth University, School Of MedicineGraduated 2014

Enumeration DateMay 11, 2017

Last NPPES UpdateNovember 26, 20254 updates tracked since enumeration

NPPES CertifiedNovember 26, 2025

✔ NPI 1356877377 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in CA · A171316

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

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

43322 GINGHAM AVE, Lancaster, CA 93535

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Other Names 1

Other Name (5)Dr. Alex Hsieh M.d., Mph

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. An Chih Hsieh M.d., Mph 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 ID2365842952

PECOS Enrollment IDI20210618001827

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 Reassignment

Medicare enrollment records show An Chih Hsieh reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Bartz-Altadonna Community Health Center

Same address

Federally Qualified Health Center (FQHC)

43322 GINGHAM AVE
Lancaster, CA 93535

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

NPI 1811279763 (661) 874-4050

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93535 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

$96.36 typical visit price

range $62.96 – $187.60

Typical copayment $24.09 (range $15.74 – $46.90)

Most-billed visit code 99203

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.

Referred Medical Equipment & Supplies CMS DME claims 3

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

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

DME-Oxygen and Supplies · category DC000N

1 supplier11 claims11 services$21.28 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

2 suppliers13 claims3,018 services$0.03 avg. paid by Medicare

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

DME-Other DME · category DE000N

2 suppliers12 claims12 services$25.94 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.

DR. MIRIAM NAZMY MD

Family Medicine