Don D. Palencia, D.O.
Family Medicine Physician · San Marcos, CA
Don D. Palencia, D.O. is a family medicine physician with a practice address in San Marcos, California, and NPI 1538144241, issued on Dec 14, 2005. Check the license (California 20A12968, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Don D. Palencia
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A12968 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1706 Descanso Ave, San Marcos, CA 92078
- Phone
- (760) 280-2230
- Enumerated
- Dec 14, 2005
- Record last updated
- Sep 10, 2025
- Fax
- (760) 552-7182
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1706 Descanso Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kasama Brand, NPGerontology Nurse Practitioner1578305165
- Caitlin Brickman, NP-CFamily Nurse Practitioner1902188303
- Julia Godley, NPGerontology Nurse Practitioner1174920367
- Alex Le, DPTPhysical Therapist1972420420
- Allyson McGunagle, RDRegistered Dietitian1821764598
Verify Don D. Palencia in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A12968Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average family medicine physician in 2024
9,591 Medicare Part D claims for 292 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 207 claims were for opioids.
Most prescribed
- Atorvastatin Calcium571 claims
- Levothyroxine Sodium550 claims
- Furosemide423 claims
- Amlodipine Besylate344 claims
- Quetiapine Fumarate272 claims
- Losartan Potassium267 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.
Don D. Palencia among 17,133 family medicine physician records in California
Don D. Palencia, D.O. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2025 · 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 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
47 family medicine physician records list a practice address in San Marcos
They are 47 of the 1,985 NPPES records with a practice address in San Marcos, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Marcos → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Imran Ahmed, MDSan Marcos, CA 920781588682561
- Liliana Alvarez-Martinez, MDSan Marcos, CA 920781790833119
- Christopher Cutter, MDSan Marcos, CA 920781538274287
- Luis Esquenazi, M.D.San Marcos, CA 920781700959848
- Corinne Giesemann, MDSan Marcos, CA 920781730115601
- Alan KrystalSan Marcos, CA 920781215078399
- Ledesma Mangubat, MDSan Marcos, CA 920781730237769
- Benny Martin, DOSan Marcos, CA 920781619975232
Common questions
What is Don D. Palencia, D.O.'s NPI number?
Don D. Palencia, D.O.'s National Provider Identifier (NPI) is 1538144241, issued on Dec 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Don D. Palencia, D.O. located?
The NPPES record lists a practice address at 1706 Descanso Ave, San Marcos, CA, 92078. Phone: (760) 280-2230. Providers update this record themselves, so call before visiting.
How can I verify Don D. Palencia, D.O.'s license?
NPPES lists California license number 20A12968, 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 Don D. Palencia, D.O. prescribe under Medicare Part D?
In 2024, Don D. Palencia, D.O. had 9,591 Medicare Part D claims for 292 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.