NPPES file of Aug 9, 2026

Oliver M. Solomon, DO

Internal Medicine Physician · Glendora, CA

Oliver M. Solomon, DO is an internal medicine physician with a practice address in Glendora, California, and NPI 1255403085, issued on Nov 15, 2006. Check the license (California 20A7503, 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
1255403085
Name
Oliver M. Solomon
Credential
DO
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
20A7503 CA
Self-reported in NPPES; status is on the state search
Practice location
130 West Route 66, Glendora, CA 91740
Phone
(626) 963-8588
Enumerated
Nov 15, 2006
Record last updated
Jan 30, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(626) 968-8578
Medicaid ID
00AX75030 CA
Medicare enrollment
Enrolled (PECOS I20040812001590); accepts Medicare assignment
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 130 West Route 66

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

  1. Charlotte Capulong, NP-CNurse Practitioner1417370065
  2. Nilesh Patel, MDInfectious Disease Physician1508858903

Verify Oliver M. Solomon in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A7503
    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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3.2 times the Medicare Part D claims of the average internal medicine physician in 2024

10,232 Medicare Part D claims for 339 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 85 claims were for opioids.

  1. Oliver Solomon10,232
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium565 claims
  2. Levothyroxine Sodium464 claims
  3. Amlodipine Besylate416 claims
  4. Losartan Potassium359 claims
  5. Metformin Hcl299 claims
  6. Famotidine217 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.

Oliver M. Solomon among 17,696 internal medicine physician records in California

Oliver M. Solomon, DO is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.

  • NPI issued2006 · 5% of these records are older, 56% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated1998 · median 2004 among the 11,065 with a school on file
  • Record last updated2015 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Internal Medicine Physician providers in California

There are 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Virginia Barrett, M.D.Glendora, CA 917401750474557
  2. Ihsan Hakimeh, MDGlendora, CA 917401407805153
  3. Ruth Hamad, M.D.Glendora, CA 917401619961703
  4. Raymundo Bautista, MDGlendora, CA 917411912099441
  5. Cristina Christopher, PACGlendora, CA 917411235378613
  6. Marc Ghabbour, M.D.Glendora, CA 917411154702157
  7. Ibrahim Hanna, M.D.Glendora, CA 917411407898653
  8. Yangdong HeRancho Cucamonga, CA 917391386907038

Common questions

What is Oliver M. Solomon, DO's NPI number?

Oliver M. Solomon, DO's National Provider Identifier (NPI) is 1255403085, issued on Nov 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Oliver M. Solomon, DO located?

The NPPES record lists a practice address at 130 West Route 66, Glendora, CA, 91740. Phone: (626) 963-8588. Providers update this record themselves, so call before visiting.

How can I verify Oliver M. Solomon, DO's license?

NPPES lists California license number 20A7503, 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 Oliver M. Solomon, DO prescribe under Medicare Part D?

In 2024, Oliver M. Solomon, DO had 10,232 Medicare Part D claims for 339 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.