NPPES file of Aug 9, 2026

Caroline Tan

Dermatology Physician · Mountain View, CA

Caroline Tan is a dermatology physician with a practice address in Mountain View, California, and NPI 1750842134, issued on Mar 27, 2019. Check the license (California A181108, 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
1750842134
Name
Caroline Tan
Primary taxonomy
Dermatology Physician 207N00000X
License number
A181108 CA
Self-reported in NPPES; status is on the state search
Practice location
2490 Hospital Dr Ste 201, Mountain View, CA 94040
Phone
(650) 962-4600
Enumerated
Mar 27, 2019
Record last updated
Nov 26, 2024
Medicare enrollment
Enrolled (PECOS I20230518000919); accepts Medicare assignment
Medical or professional school
Stanford University School Of Medicine, 2019
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 2490 Hospital Dr Ste 201

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

  1. Ashley Clark, MD, MASDermatology Physician1932590205

Verify Caroline Tan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A181108
    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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59% fewer Medicare Part D claims than the average dermatology physician in 2024

325 Medicare Part D claims for 147 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.

  1. Caroline Tan325
  2. Specialty average797

Most prescribed

  1. Ketoconazole66 claims
  2. Betamethasone Diprop Augmented28 claims
  3. Triamcinolone Acetonide23 claims
  4. Doxycycline Monohydrate18 claims
  5. Mupirocin18 claims
  6. Clobetasol Propionate17 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: $2,986.38

125 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Caroline Tan$2,986.38
  2. Specialty average$8,544.61

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

Bills Medicare through one group practice

  1. Golden State Dermatology Associates, Inc.Mountain View, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Caroline Tan among 2,083 dermatology physician records in California

Caroline Tan is one of 2,083 dermatology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 89% of them.

  • NPI issued2019 · 89% of these records are older, 8% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2019 · median 2006 among the 1,450 with a school on file
  • Record last updated2024 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Dermatology Physician providers in California

There are 2,083 dermatology physician records in California.

The 8 dermatology physician records with the nearest ZIP codes

  1. Arthur Abrams, MDMountain View, CA 940401518093178
  2. Kristine Ahern, MDMountain View, CA 940401871543702
  3. Jennifer Chan, MDMountain View, CA 940401992756670
  4. Bryan Cho, MDMountain View, CA 940401891811600
  5. F Clark, MD MPHMountain View, CA 940401831380112
  6. Ellen Deconinck, MDMountain View, CA 940401114977865
  7. Anjali Morales, MDMountain View, CA 940401326211376
  8. Jenny Murase, M.D.Mountain View, CA 940401346371382

Common questions

What is Caroline Tan's NPI number?

Caroline Tan's National Provider Identifier (NPI) is 1750842134, issued on Mar 27, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Caroline Tan located?

The NPPES record lists a practice address at 2490 Hospital Dr Ste 201, Mountain View, CA, 94040. Phone: (650) 962-4600. Providers update this record themselves, so call before visiting.

How can I verify Caroline Tan's license?

NPPES lists California license number A181108, 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 Caroline Tan prescribe under Medicare Part D?

In 2024, Caroline Tan had 325 Medicare Part D claims for 147 beneficiaries; the average among dermatology physician prescribers was 797. 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.