NPPES file of Aug 9, 2026

Tan Lin Wong, MD

Internal Medicine Physician · La Verne, CA

Tan Lin Wong, MD is an internal medicine physician with a practice address in La Verne, California, and NPI 1790728749, issued on Jun 14, 2006. Check the license (California A50496, 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
1790728749
Name
Tan Lin Wong
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
A50496 CA
Self-reported in NPPES; status is on the state search
Practice location
2100 Foothill Blvd Ste A, La Verne, CA 91750
Phone
(909) 596-1941
Enumerated
Jun 14, 2006
Record last updated
Jan 4, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(909) 596-1943
Medicaid IDs
GR0083450 CA
00A504961 CA
Medicare enrollment
Enrolled (PECOS I20040416000402); 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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Also registered at 2100 Foothill Blvd Ste A

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ruby Chao, OMDAcupuncturist1831675891
  2. Carole Chiang, D.P.M.Foot & Ankle Surgery Podiatrist1437437415

Verify Tan Lin Wong in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A50496
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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

14,285 Medicare Part D claims for 630 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims. 434 claims were for opioids.

  1. Tan Wong14,285
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium572 claims
  2. Rosuvastatin Calcium512 claims
  3. Amlodipine Besylate452 claims
  4. Losartan Potassium448 claims
  5. Levothyroxine Sodium385 claims
  6. Metoprolol Succinate317 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: $5,643.86

187 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. Tan Wong$5,643.86
  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.

Tan Lin Wong among 17,696 internal medicine physician records in California

Tan Lin Wong, MD 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 updated2014 · 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).

5 internal medicine physician records list a practice address in La Verne

They are 5 of the 515 NPPES records with a practice address in La Verne, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Latha Achanta, MD MPHLa Verne, CA 917501285893966
  2. Younis Ali, MDLa Verne, CA 917501841281409
  3. Mara Archambault, MDLa Verne, CA 917501023157021
  4. Freddie Ibrahim, M.D.La Verne, CA 917501598960254
  5. Wei Bao, M.D.City Of Industry, CA 917481437199304
  6. Kuo Hsien Chang, MDRowland Heights, CA 917481851392922
  7. Yongqing Feng, M.D.Rowland Heights, CA 917481497806988
  8. Koushik Kasanagottu, MDEastvale, CA 917521033601844

Common questions

What is Tan Lin Wong, MD's NPI number?

Tan Lin Wong, MD's National Provider Identifier (NPI) is 1790728749, issued on Jun 14, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Tan Lin Wong, MD located?

The NPPES record lists a practice address at 2100 Foothill Blvd Ste A, La Verne, CA, 91750. Phone: (909) 596-1941. Providers update this record themselves, so call before visiting.

How can I verify Tan Lin Wong, MD's license?

NPPES lists California license number A50496, 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 Tan Lin Wong, MD prescribe under Medicare Part D?

In 2024, Tan Lin Wong, MD had 14,285 Medicare Part D claims for 630 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.