Tan Khac Nguyen, M.D.
Procedural Dermatology Physician · Upland, CA
Tan Khac Nguyen, M.D. is a procedural dermatology physician with a practice address in Upland, California, and NPI 1144273491, issued on May 18, 2006. Check the license (California A70331, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tan Khac Nguyen
- Credential
- M.D.
- Primary taxonomy
- Procedural Dermatology Physician 207NS0135X
- License number
- A70331 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1310 San Bernardino RD, Upland, CA 91786
- Phone
- (909) 946-8600
- Enumerated
- May 18, 2006
- Record last updated
- Aug 8, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (909) 946-8604
- Medicare enrollment
- Enrolled (PECOS I20040611000811); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 1310 San Bernardino RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Basim Abdelkarim, MDGastroenterology Physician1932217544
- Mouhanad Alwan, MDObstetrics & Gynecology Physician1760595029
- Lorraine Dominick, WHNPObstetrics & Gynecology Nurse Practitioner1205265931
- Ian Donahue, PA-CPhysician Assistant1023406725
- Noralyne Eini, FNPFamily Nurse Practitioner1811395221
- Amanda Ingalls, PA-CPhysician Assistant1134522501
Verify Tan Khac Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A70331Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% fewer Medicare Part D claims than the average procedural dermatology physician in 2024
662 Medicare Part D claims for 147 beneficiaries, against an average of 713 among the 446 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Triamcinolone Acetonide97 claims
- Ketoconazole74 claims
- Mometasone Furoate71 claims
- Clobetasol Propionate40 claims
- Fluocinonide25 claims
- Dupixent Pen24 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.
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,324.10
65 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 377 providers of this specialty with any payment received $10,439.11 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.
Bills Medicare through 2 group practices
- Advanced Skin Clinic And Surgery PCUpland, CA
- Department OF State HospitalsPatton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Procedural Dermatology Physician providers in California
There are 120 procedural dermatology physician records in California.
Other procedural dermatology physician records in California
- Harvey Abrams, M.D.Los Angeles, CA1992867758
- Salman Alsaad, MDSan Diego, CA1205090826
- Marylee Amerian, M.D.Santa Monica, CA1972597607
- George Anterasian, MDSanta Monica, CA1427101443
- Jay Applebaum, M.D.Tustin, CA1740214618
- Suzanne Berkman, M.D.Beverly Hills, CA1235388828
- Julie Billings, MDOakland, CA1801957584
- Jeanette Black, M.D.Los Angeles, CA1497070510
- Laura Blumenthal, MDThousand Oaks, CA1912369950
- Patricia BrennIrvine, CA1609281328
Common questions
What is Tan Khac Nguyen, M.D.'s NPI number?
Tan Khac Nguyen, M.D.'s National Provider Identifier (NPI) is 1144273491, issued on May 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tan Khac Nguyen, M.D. located?
The NPPES record lists a practice address at 1310 San Bernardino RD, Upland, CA, 91786. Phone: (909) 946-8600. Providers update this record themselves, so call before visiting.
How can I verify Tan Khac Nguyen, M.D.'s license?
NPPES lists California license number A70331, 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 Khac Nguyen, M.D. prescribe under Medicare Part D?
In 2024, Tan Khac Nguyen, M.D. had 662 Medicare Part D claims for 147 beneficiaries; the average among procedural dermatology physician prescribers was 713. Part D covers Medicare prescriptions only.
What is Tan Khac Nguyen, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.