NPPES file of Aug 9, 2026

Hong Liang, M.D.

Internal Medicine Physician · Rosemead, CA

Hong Liang, M.D. is an internal medicine physician with a practice address in Rosemead, California, and NPI 1598784340, issued on Jul 19, 2006. Check the license (California A66820, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1598784340
Name
Hong Liang
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
A66820 CA
Self-reported in NPPES; status is on the state search
Practice location
3105 Del Mar Ave, Rosemead, CA 91770
Phone
(626) 280-8897
Enumerated
Jul 19, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(626) 280-9902
Medicaid ID
00A668200 CA
Medicare enrollment
Enrolled (PECOS I20040129001160); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Hong Liang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A66820
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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6.6 times the Medicare Part D claims of the average internal medicine physician in 2024

20,838 Medicare Part D claims for 801 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 42 claims were for opioids.

  1. Hong Liang20,838
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium1,789 claims
  2. Calcitriol1,087 claims
  3. Amlodipine Besylate1,045 claims
  4. Metformin Hcl1,022 claims
  5. Losartan Potassium842 claims
  6. Icosapent Ethyl828 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: $951.75

42 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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.

  1. Hong Liang$951.75
  2. Specialty average$1,303.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Hong Liang among 17,696 internal medicine physician records in California

Hong Liang, 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
  • Graduated1984 · 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).

14 internal medicine physician records list a practice address in Rosemead

They are 14 of the 839 NPPES records with a practice address in Rosemead, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Andy Chen, MDRosemead, CA 917701831153659
  2. Kelvin Chen, MDRosemead, CA 917701225387137
  3. Josephine Choa, M.D.Rosemead, CA 917701356384408
  4. Han Duong, M.D.& D.O.Rosemead, CA 917701013070234
  5. Susan Heller, M.D.Rosemead, CA 917701720251929
  6. Harold Hsu, M.D.Rosemead, CA 917701770508111
  7. Son Le, M.D.Rosemead, CA 917701942290762
  8. Tam Le, M.DRosemead, CA 917701154480077

Common questions

What is Hong Liang, M.D.'s NPI number?

Hong Liang, M.D.'s National Provider Identifier (NPI) is 1598784340, issued on Jul 19, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Hong Liang, M.D. located?

The NPPES record lists a practice address at 3105 Del Mar Ave, Rosemead, CA, 91770. Phone: (626) 280-8897. Providers update this record themselves, so call before visiting.

How can I verify Hong Liang, M.D.'s license?

NPPES lists California license number A66820, 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 Hong Liang, M.D. prescribe under Medicare Part D?

In 2024, Hong Liang, M.D. had 20,838 Medicare Part D claims for 801 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.