Keith Martin, M.D.
NPI 1649280546 · Gastroenterology Physician · Yorba Linda, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Keith Martin, M.D. is a Gastroenterology Physician provider in Yorba Linda, CA (NPI 1649280546).
Provider details
- NPI number
- 1649280546
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G30724 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
347 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 146 | $139 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 83 | $178 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 34 | $112 |
| Colorectal Cancer Screening; Colonoscopy on Individual Not Meeting Criteria for High RiskG0121 | 20 | $185 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 19 | $167 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 124 | 41 |
| Pantoprazole Sodium | 56 | 18 |
| Diphenoxylate Hcl/Atropinebrand: Diphenoxylate-Atropine | 29 | — |
| Dicyclomine Hcl | 18 | — |
| Mercaptopurine | 16 | — |
| Esomeprazole Magnesium | 13 | — |
| Lansoprazole | 13 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-09
- Last updated
- 2025-05-06
- Certified
- 2025-05-06
Frequently asked questions
- What is Keith Martin's NPI number?
- Keith Martin's National Provider Identifier (NPI) is 1649280546, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Keith Martin's specialty?
- Keith Martin is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Keith Martin located?
- Keith Martin's practice location on file with NPPES is 16671 Yorba Linda Blvd, Yorba Linda, CA 92886-2025.
- What is Keith Martin's phone number?
- The practice phone number listed in the NPPES registry for Keith Martin is (714) 996-3700.
- Does Keith Martin accept Medicare?
- Keith Martin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Keith Martin's NPI active?
- Yes — Keith Martin's NPI (1649280546) is active in the NPPES registry as of the last update on 2025-05-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.