NPPES file of Aug 9, 2026

Charles M. Tran, D.O.

Procedural Dermatology Physician · Upland, CA

Charles M. Tran, D.O. is a procedural dermatology physician with a practice address in Upland, California, and NPI 1922051739, issued on May 19, 2006. Check the license (California 20A6999, 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
1922051739
Name
Charles M. Tran
Credential
D.O.
Primary taxonomy
Procedural Dermatology Physician 207NS0135X
License number
20A6999 CA
Self-reported in NPPES; status is on the state search
Practice location
585 N Mountain Ave, Upland, CA 91786
Phone
(909) 946-2228
Enumerated
May 19, 2006
Record last updated
Sep 30, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(909) 946-8007
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 585 N Mountain Ave

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

  1. Anthony Antenorcruz, PA-CPhysician Assistant1376722884
  2. Michelle Carhill, NPNurse Practitioner1023873759
  3. Celina Chau, LACAcupuncturist1558724336
  4. Pratibha KayasthaFamily Nurse Practitioner1942601281
  5. Shannon Lambert, MPAS, PA-CPhysician Assistant1548406952
  6. Kristin Mickelson, PA-CMedical Physician Assistant1982072682

Verify Charles M. Tran in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A6999
    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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98% fewer Medicare Part D claims than the average procedural dermatology physician in 2024

11 Medicare Part D claims, against an average of 713 among the 446 providers of this specialty who prescribed in Part D.

  1. Charles Tran11
  2. Specialty average713

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.

Charles M. Tran among 120 procedural dermatology physician records in California

Charles M. Tran, D.O. is one of 120 procedural dermatology physician records with a practice address in California. 78% 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 14% of them.

  • NPI issued2006 · 14% of these records are older, 40% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileNo · 52% of these records are
  • Record last updated2010 · 64% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207NS0135X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Procedural Dermatology Physician providers in California

There are 120 procedural dermatology physician records in California.

The 8 procedural dermatology physician records with the nearest ZIP codes

  1. Ronald Liskanich, D.O.Upland, CA 917861245391820
  2. Tan Nguyen, M.D.Upland, CA 917861144273491
  3. Andrea Passalacqua, DOUpland, CA 917861134380330
  4. Gloria Stevens, M.D.Upland, CA 917861699836288
  5. Jacob Rispler, M.D.Covina, CA 917231689660037
  6. Diem Pham, D.O.Chino Hills, CA 917091255421335
  7. Peter Rullan, M.D.Chula Vista, CA 919101114963170
  8. Sam Khalifian, MDLa Mesa, CA 919421174926190

Common questions

What is Charles M. Tran, D.O.'s NPI number?

Charles M. Tran, D.O.'s National Provider Identifier (NPI) is 1922051739, issued on May 19, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Charles M. Tran, D.O. located?

The NPPES record lists a practice address at 585 N Mountain Ave, Upland, CA, 91786. Phone: (909) 946-2228. Providers update this record themselves, so call before visiting.

How can I verify Charles M. Tran, D.O.'s license?

NPPES lists California license number 20A6999, 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 Charles M. Tran, D.O. prescribe under Medicare Part D?

In 2024, Charles M. Tran, D.O. had 11 Medicare Part D claims; the average among procedural dermatology physician prescribers was 713. 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.