Thomas Kaegi, M.D.
NPI 1578552121 · Internal Medicine Physician · Concord, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Kaegi, M.D. is a Internal Medicine Physician provider in Concord, MA (NPI 1578552121).
Provider details
- NPI number
- 1578552121
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 79435 (MA)
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
1,455 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 245 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 205 | $98 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 116 | $13 |
| Hemoglobin A1c Level83036 | 103 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 91 | $53 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 76 | $10 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 93 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 589 | 183 |
| Lisinopril | 342 | 108 |
| Simvastatin | 252 | 76 |
| Losartan Potassium | 234 | 74 |
| Amlodipine Besylate | 216 | 66 |
| Levothyroxine Sodium | 209 | 61 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-17
- Last updated
- 2020-11-16
- Certified
- 2020-11-16
Frequently asked questions
- What is Thomas Kaegi's NPI number?
- Thomas Kaegi's National Provider Identifier (NPI) is 1578552121, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Kaegi's specialty?
- Thomas Kaegi is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Kaegi located?
- Thomas Kaegi's practice location on file with NPPES is 330 Baker Ave, Concord, MA 01742-2129.
- What is Thomas Kaegi's phone number?
- The practice phone number listed in the NPPES registry for Thomas Kaegi is (978) 287-9350.
- Does Thomas Kaegi accept Medicare?
- Thomas Kaegi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Kaegi's NPI active?
- Yes — Thomas Kaegi's NPI (1578552121) is active in the NPPES registry as of the last update on 2020-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.