John Marshall, MD
NPI 1780761916 · Family Medicine Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Marshall, MD is a Family Medicine Physician provider in Phoenix, AZ (NPI 1780761916).
Provider details
- NPI number
- 1780761916
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 10961 (AZ)
Specialties & taxonomies
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
304 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 | 112 | $123 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 36 | $9 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 33 | $14 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 29 | $173 |
| Urinalysis, Manual Test81002 | 28 | $3 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 28 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 29 | 22 |
| Amlodipine Besylate | 18 | 11 |
| Atorvastatin Calcium | 18 | 14 |
| Zolpidem Tartrate | 14 | — |
| Prednisone | 13 | — |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 12 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$40 across 1 record (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
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2018-09-26
Frequently asked questions
- What is John Marshall's NPI number?
- John Marshall's National Provider Identifier (NPI) is 1780761916, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Marshall's specialty?
- John Marshall is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Marshall located?
- John Marshall's practice location on file with NPPES is 3811 E Bell Rd Ste 106, Phoenix, AZ 85032-2158.
- What is John Marshall's phone number?
- The practice phone number listed in the NPPES registry for John Marshall is (602) 482-6100.
- Does John Marshall accept Medicare?
- John Marshall is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Marshall's NPI active?
- Yes — John Marshall's NPI (1780761916) is active in the NPPES registry as of the last update on 2018-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.