An Pang Chieng, M.D.
Internal Medicine Physician · Los Angeles, CA
An Pang Chieng, M.D. is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1821030305, issued on Jun 11, 2006. Check the license (California G66648, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- An Pang Chieng
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G66648 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3301 N Eastern Ave, Los Angeles, CA 90032
- Phone
- (323) 225-2351
- Enumerated
- Jun 11, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (323) 225-7555
- Medicaid ID
- 00G666480 CA
- Medicare enrollment
- Enrolled (PECOS I20040211001284); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1988
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 3301 N Eastern Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify An Pang Chieng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G66648Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% more Medicare Part D claims than the average internal medicine physician in 2024
6,328 Medicare Part D claims for 499 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 122 claims were for opioids.
Most prescribed
- Atorvastatin Calcium494 claims
- Amlodipine Besylate329 claims
- Losartan Potassium218 claims
- Metformin Hcl162 claims
- Levothyroxine Sodium157 claims
- Rosuvastatin Calcium148 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $312.38
13 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
An Pang Chieng among 17,696 internal medicine physician records in California
An Pang Chieng, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1988 · median 2004 among the 11,065 with a school on file
- Record last updated2007 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,423 internal medicine physician records list a practice address in Los Angeles
They are 1,423 of the 69,537 NPPES records with a practice address in Los Angeles, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Los Angeles → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mahnoush Jazzabi, M.D.Los Angeles, CA 900321376781401
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- William Hardy, M.D.Los Angeles, CA 900331760410518
- Howard Hodis, M.D.Los Angeles, CA 900331407894009
- Eric Hsieh, M.D.Los Angeles, CA 900331811941974
- Jenny Hwang, M.D.Los Angeles, CA 900331578548764
- Anjali Jain, M.D.Los Angeles, CA 900311962707265
Common questions
What is An Pang Chieng, M.D.'s NPI number?
An Pang Chieng, M.D.'s National Provider Identifier (NPI) is 1821030305, issued on Jun 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is An Pang Chieng, M.D. located?
The NPPES record lists a practice address at 3301 N Eastern Ave, Los Angeles, CA, 90032. Phone: (323) 225-2351. Providers update this record themselves, so call before visiting.
How can I verify An Pang Chieng, M.D.'s license?
NPPES lists California license number G66648, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does An Pang Chieng, M.D. prescribe under Medicare Part D?
In 2024, An Pang Chieng, M.D. had 6,328 Medicare Part D claims for 499 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.