John Roller, M.D.
NPI 1447607627 · Internal Medicine Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Roller, M.D. is a Internal Medicine Physician provider in Phoenix, AZ (NPI 1447607627).
Provider details
- NPI number
- 1447607627
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 04-42260 (KS)
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
10 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
365 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 | 168 | $93 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 58 | $113 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 52 | $138 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 35 | $174 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 22 | $69 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 61 | 24 |
| Prochlorperazine Maleate | 50 | 33 |
| Ondansetron Hcl | 45 | 36 |
| Pantoprazole Sodium | 33 | — |
| Potassium Chloride | 28 | 15 |
| Apixabanbrand: Eliquis | 27 | 12 |
| Ondansetronbrand: Ondansetron Odt | 27 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$43 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)
- Kumc Imresidency Program3901 Rainbow Blvd, Ms 2027Kansas City, KS 66160-0001Phone: (913) 588-6050
Registry dates
- Enumerated
- 2016-05-18
- Last updated
- 2025-08-06
- Certified
- 2020-07-06
Frequently asked questions
- What is John Roller's NPI number?
- John Roller's National Provider Identifier (NPI) is 1447607627, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Roller's specialty?
- John Roller is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Roller located?
- John Roller's practice location on file with NPPES is 925 E. Mcdowell Rd., Phoenix, AZ 85006.
- What is John Roller's phone number?
- The practice phone number listed in the NPPES registry for John Roller is (602) 521-3700.
- Does John Roller accept Medicare?
- John Roller is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Roller's NPI active?
- Yes — John Roller's NPI (1447607627) is active in the NPPES registry as of the last update on 2025-08-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.