Thomas Holmes, M.D.
NPI 1689603110 · Internal Medicine Physician · Park Ridge, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Holmes, M.D. is a Internal Medicine Physician provider in Park Ridge, IL (NPI 1689603110).
Provider details
- NPI number
- 1689603110
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036066696 (IL)
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
19 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
1,372 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 449 | $93 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 259 | $9 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 170 | $81 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 113 | $132 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 102 | $129 |
| Administration of Influenza Virus VaccineG0008 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 63 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 356 | 104 |
| Amlodipine Besylate | 162 | 47 |
| Lisinopril | 154 | 46 |
| Hydrochlorothiazide | 141 | 40 |
| Metformin Hcl | 139 | 42 |
| Losartan Potassium | 133 | 42 |
| Tamsulosin Hcl | 118 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-30
- Last updated
- 2023-03-08
- Certified
- 2023-03-08
Frequently asked questions
- What is Thomas Holmes's NPI number?
- Thomas Holmes's National Provider Identifier (NPI) is 1689603110, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Holmes's specialty?
- Thomas Holmes is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Holmes located?
- Thomas Holmes's practice location on file with NPPES is 1775 Ballard Rd, Park Ridge, IL 60068-1005.
- What is Thomas Holmes's phone number?
- The practice phone number listed in the NPPES registry for Thomas Holmes is (847) 318-9340.
- Does Thomas Holmes accept Medicare?
- Thomas Holmes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Holmes's NPI active?
- Yes — Thomas Holmes's NPI (1689603110) is active in the NPPES registry as of the last update on 2023-03-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.