Gordon S. Appelbaum, M.D.
Emergency Medicine Physician · Oceanside, CA
Gordon S. Appelbaum, M.D. is an emergency medicine physician with a practice address in Oceanside, California, and NPI 1245200674, issued on Jan 26, 2006. Check the license (California G069453, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gordon S. Appelbaum
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- G069453 CA
MD8036 HI
35.064031 OH
Self-reported in NPPES; status is on the state search - Practice location
- 4171 Oceanside Blvd, Oceanside, CA 92056
- Phone
- (760) 216-6253
- Enumerated
- Jan 26, 2006
- Record last updated
- Dec 20, 2024
- Medicaid ID
- PENDING OH
- Medicare enrollment
- Enrolled (PECOS I20070228000279); accepts Medicare assignment
- Medical or professional school
- University Of Toledo College Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 4171 Oceanside Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David TrefryHearing Instrument Specialist1730315557
Verify Gordon S. Appelbaum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G069453Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% more Medicare Part D claims than the average emergency medicine physician in 2024
325 Medicare Part D claims for 267 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin-Clavulanate Potass29 claims
- Nitrofurantoin Mono-Macro28 claims
- Albuterol Sulfate Hfa23 claims
- Amoxicillin23 claims
- Doxycycline Hyclate21 claims
- Cephalexin13 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): 0 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).
Bills Medicare through 3 group practices
- Jurkowski Medical CorporationSan Diego, CA
- Next Step Medical IncOceanside, CA
- Waianae District Comprehensive Health And Hospital Board IncWaianae, HI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gordon S. Appelbaum among 7,751 emergency medicine physician records in California
Gordon S. Appelbaum, M.D. is one of 7,751 emergency 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1989 · median 2011 among the 4,560 with a school on file
- Record last updated2024 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
50 emergency medicine physician records list a practice address in Oceanside
They are 50 of the 3,438 NPPES records with a practice address in Oceanside, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Oceanside → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Michael Alaynick, M.D.Oceanside, CA 920561073507174
- Dorothy Brown, M.D.Oceanside, CA 920561710971643
- Randall Browning, M.D.Oceanside, CA 920561629062559
- John Bushong, M.D.Oceanside, CA 920561235123050
- Reid Conant, M.D.Oceanside, CA 920561255326351
- Michael Forman, M.D.Oceanside, CA 920561992790661
- Steven Gabriel, M.D.Oceanside, CA 920561780679464
- Darin Garner, M.D.Oceanside, CA 920561275535874
Common questions
What is Gordon S. Appelbaum, M.D.'s NPI number?
Gordon S. Appelbaum, M.D.'s National Provider Identifier (NPI) is 1245200674, issued on Jan 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gordon S. Appelbaum, M.D. located?
The NPPES record lists a practice address at 4171 Oceanside Blvd, Oceanside, CA, 92056. Phone: (760) 216-6253. Providers update this record themselves, so call before visiting.
How can I verify Gordon S. Appelbaum, M.D.'s license?
NPPES lists California license number G069453, 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 Gordon S. Appelbaum, M.D. prescribe under Medicare Part D?
In 2024, Gordon S. Appelbaum, M.D. had 325 Medicare Part D claims for 267 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Gordon S. Appelbaum, M.D.'s MIPS final score?
The 2023 MIPS final score is 0 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.