Stephen Calvert, M.D.
NPI 1902875420 · Internal Medicine Physician · Tulsa, OK
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Calvert, M.D. is a Internal Medicine Physician provider in Tulsa, OK (NPI 1902875420).
Provider details
- NPI number
- 1902875420
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 22446 (OK)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
179 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 | 77 | $123 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 45 | $87 |
| Hemoglobin A1c Level83036 | 24 | $10 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 22 | $161 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 11 | $166 |
Typical Medicare-allowed amounts for these services range $10–$166 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 69 | 27 |
| Metformin Hcl | 39 | 19 |
| Losartan Potassium | 37 | 15 |
| Trazodone Hcl | 36 | — |
| Rosuvastatin Calcium | 26 | 13 |
| Atorvastatin Calcium | 25 | 15 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-16
- Last updated
- 2024-08-26
- Certified
- 2024-08-26
Frequently asked questions
- What is Stephen Calvert's NPI number?
- Stephen Calvert's National Provider Identifier (NPI) is 1902875420, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Calvert's specialty?
- Stephen Calvert is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Calvert located?
- Stephen Calvert's practice location on file with NPPES is 8115 S Memorial Dr, Tulsa, OK 74133-4331.
- What is Stephen Calvert's phone number?
- The practice phone number listed in the NPPES registry for Stephen Calvert is (918) 254-6315.
- Does Stephen Calvert accept Medicare?
- Stephen Calvert is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Calvert's NPI active?
- Yes — Stephen Calvert's NPI (1902875420) is active in the NPPES registry as of the last update on 2024-08-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.