Mark Belkin, M.D.
NPI 1023499498 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Belkin, M.D. is a Internal Medicine Physician provider in Chicago, IL (NPI 1023499498).
Provider details
- NPI number
- 1023499498
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 125067083 (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
11 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
913 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 196 | $130 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 192 | $9 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 112 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 109 | $100 |
| Critical Care, First 30-74 Minutes99291 | 93 | $236 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Spironolactone | 124 | 54 |
| Riociguatbrand: Adempas | 64 | — |
| Sacubitril/Valsartanbrand: Entresto | 51 | 15 |
| Metoprolol Succinate | 41 | 15 |
| Empagliflozinbrand: Jardiance | 36 | 14 |
| Furosemide | 33 | 18 |
| Macitentanbrand: Opsumit |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,408 across 19 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
- 2015-06-11
- Last updated
- 2015-06-11
Frequently asked questions
- What is Mark Belkin's NPI number?
- Mark Belkin's National Provider Identifier (NPI) is 1023499498, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Belkin's specialty?
- Mark Belkin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Belkin located?
- Mark Belkin's practice location on file with NPPES is 5841 S Maryland Ave, Chicago, IL 60637-1447.
- What is Mark Belkin's phone number?
- The practice phone number listed in the NPPES registry for Mark Belkin is (773) 702-6840.
- Does Mark Belkin accept Medicare?
- Mark Belkin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Belkin's NPI active?
- Yes — Mark Belkin's NPI (1023499498) is active in the NPPES registry as of the last update on 2015-06-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.