Michael Callaway, M.D.
NPI 1588655153 · Internal Medicine Physician · Nashville, TN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Callaway, M.D. is a Internal Medicine Physician provider in Nashville, TN (NPI 1588655153).
Provider details
- NPI number
- 1588655153
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD016010 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
1,174 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 205 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 147 | $117 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 137 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test85027 | 110 | $6 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 99 | $13 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 67 | $119 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 74 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 147 | 40 |
| Atorvastatin Calcium | 123 | 36 |
| Gabapentin | 118 | 14 |
| Omeprazole | 117 | 33 |
| Amlodipine Besylate | 113 | 27 |
| Apixabanbrand: Eliquis | 91 | 16 |
| Citalopram Hydrobromide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$94 across 5 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
Registry dates
- Enumerated
- 2005-11-02
- Last updated
- 2017-12-11
Frequently asked questions
- What is Michael Callaway's NPI number?
- Michael Callaway's National Provider Identifier (NPI) is 1588655153, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Callaway's specialty?
- Michael Callaway is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Callaway located?
- Michael Callaway's practice location on file with NPPES is 222 22nd Ave N, Nashville, TN 37203-1852.
- What is Michael Callaway's phone number?
- The practice phone number listed in the NPPES registry for Michael Callaway is (629) 255-2148.
- Does Michael Callaway accept Medicare?
- Michael Callaway is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Callaway's NPI active?
- Yes — Michael Callaway's NPI (1588655153) is active in the NPPES registry as of the last update on 2017-12-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.