John Martin, MD
NPI 1598853939 · Internal Medicine Physician · Mesa, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Martin, MD is a Internal Medicine Physician provider in Mesa, AZ (NPI 1598853939).
Provider details
- NPI number
- 1598853939
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 28549 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
734 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 548 | $123 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 81 | $160 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 39 | $125 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 33 | $174 |
| Administration of Influenza Virus VaccineG0008 | 20 | $31 |
| Detection Test By Immunoassay Technique for Severe Acute Respiratory Syndrome Coronavirus and Influenza |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 87 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 393 | 139 |
| Amlodipine Besylate | 241 | 78 |
| Rosuvastatin Calcium | 223 | 81 |
| Levothyroxine Sodium | 214 | 73 |
| Losartan Potassium | 162 | 59 |
| Tamsulosin Hcl | 126 | 49 |
| Lisinopril |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$35 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1107 E Bell Rd Ste 4Phoenix, AZ 85022-2692Phone: (602) 567-4800Fax: (602) 567-9939
Registry dates
- Enumerated
- 2006-10-11
- Last updated
- 2026-02-10
- Certified
- 2026-02-10
Frequently asked questions
- What is John Martin's NPI number?
- John Martin's National Provider Identifier (NPI) is 1598853939, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Martin's specialty?
- John Martin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Martin located?
- John Martin's practice location on file with NPPES is 4315 E Main St, Mesa, AZ 85205-8605.
- What is John Martin's phone number?
- The practice phone number listed in the NPPES registry for John Martin is (480) 870-7500.
- Does John Martin accept Medicare?
- John Martin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Martin's NPI active?
- Yes — John Martin's NPI (1598853939) is active in the NPPES registry as of the last update on 2026-02-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.