Thelma Marin, M.D.
NPI 1588621601 · Family Medicine Physician · Woodridge, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thelma Marin, M.D. is a Family Medicine Physician provider in Woodridge, IL (NPI 1588621601).
Provider details
- NPI number
- 1588621601
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036089513 (IL)
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
432 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 90 | $92 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 83 | $131 |
| Advance Care Planning, First 30 Minutes99497 | 45 | $83 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 40 | $9 |
| Hemoglobin A1c Level83036 | 40 | $10 |
| Evaluation of Neuropsychological Test, First Hour96132 | 31 | $130 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 44 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 144 | 61 |
| Amlodipine Besylate | 140 | 67 |
| Metformin Hcl | 89 | 35 |
| Losartan Potassium | 88 | 40 |
| Levothyroxine Sodium | 81 | 30 |
| Rosuvastatin Calcium | 66 | 28 |
| Omeprazole |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$251 across 12 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
- 2006-05-01
- Last updated
- 2021-12-30
- Certified
- 2021-12-30
Frequently asked questions
- What is Thelma Marin's NPI number?
- Thelma Marin's National Provider Identifier (NPI) is 1588621601, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thelma Marin's specialty?
- Thelma Marin is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thelma Marin located?
- Thelma Marin's practice location on file with NPPES is 7530 Woodward Ave, Woodridge, IL 60517-3100.
- What is Thelma Marin's phone number?
- The practice phone number listed in the NPPES registry for Thelma Marin is (630) 910-1177.
- Does Thelma Marin accept Medicare?
- Thelma Marin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thelma Marin's NPI active?
- Yes — Thelma Marin's NPI (1588621601) is active in the NPPES registry as of the last update on 2021-12-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.