Dianne Michelle Tinio Lumaquin-Yin, MD, PHD
Dermatology Physician · San Diego, CA
Dianne Michelle Tinio Lumaquin-Yin, MD, PHD is a dermatology physician with a practice address in San Diego, California, and NPI 1649039033, issued on Mar 18, 2024. Check the license (California A204018, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Dianne Michelle Tinio Lumaquin-Yin
- Credential
- MD, PHD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- A204018 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8899 University Center LN Ste 350, San Diego, CA 92122
- Phone
- (858) 657-1675
- Enumerated
- Mar 18, 2024
- Record last updated
- Feb 14, 2026
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 2,083 in California → Look up another NPI →
Also registered at 8899 University Center LN Ste 350
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maryam Afshar, M.D.Dermatology Physician1992063036
- Pamela Chayavichitsilp, MDDermatology Physician1588898811
- Selena Chen, MDDermatology Physician1669222741
- Andrew Choi, MDDermatology Physician1033500798
- Lena Chu, MDStudent in an Organized Health Care Education/Training Program1417625831
- Raj Fadadu, MD, MSStudent in an Organized Health Care Education/Training Program1043915028
Verify Dianne Michelle Tinio Lumaquin-Yin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A204018Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average dermatology physician in 2024
25 Medicare Part D claims for 14 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D.
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.
Dianne Michelle Tinio Lumaquin-Yin among 2,083 dermatology physician records in California
Dianne Michelle Tinio Lumaquin-Yin, MD, PHD 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 2024, is newer than over 99% of them.
- NPI issued2024 · over 99% of these records are older, under 1% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2026 · 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.
All 2,083 in California → Every provider in San Diego → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Maryam Afshar, M.D.San Diego, CA 921221992063036
- Pamela Chayavichitsilp, MDSan Diego, CA 921221588898811
- Selena Chen, MDSan Diego, CA 921221669222741
- Andrew Choi, MDSan Diego, CA 921221033500798
- Ogechi Ikediobi, MD, PHDSan Diego, CA 921221639448269
- Swati Kannan, M.D.San Diego, CA 921221508155227
- Mona Mofid, M.D.San Diego, CA 921221730167677
- Charisse Orme, MD, PHDSan Diego, CA 921221861767097
Common questions
What is Dianne Michelle Tinio Lumaquin-Yin, MD, PHD's NPI number?
Dianne Michelle Tinio Lumaquin-Yin, MD, PHD's National Provider Identifier (NPI) is 1649039033, issued on Mar 18, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Dianne Michelle Tinio Lumaquin-Yin, MD, PHD located?
The NPPES record lists a practice address at 8899 University Center LN Ste 350, San Diego, CA, 92122. Phone: (858) 657-1675. Providers update this record themselves, so call before visiting.
How can I verify Dianne Michelle Tinio Lumaquin-Yin, MD, PHD's license?
NPPES lists California license number A204018, 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 Dianne Michelle Tinio Lumaquin-Yin, MD, PHD prescribe under Medicare Part D?
In 2024, Dianne Michelle Tinio Lumaquin-Yin, MD, PHD had 25 Medicare Part D claims for 14 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.