Robert Zielinski, MD
NPI 1821617762 · Internal Medicine Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Zielinski, MD is a Internal Medicine Physician provider in Baltimore, MD (NPI 1821617762).
Provider details
- NPI number
- 1821617762
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- D96758 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
6 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
940 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 35 Minutes99232 | 725 | $80 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 94 | $117 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 59 | $121 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 50 | $50 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 12 | $126 |
Typical Medicare-allowed amounts for these services range $50–$126 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$509 across 22 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
Additional practice locations (1)
- 1215 Lee StMail Stop '800744'Charlottesville, VA 22908-0816Phone: (434) 924-1931Fax: (434) 243-5770
Registry dates
- Enumerated
- 2020-04-10
- Last updated
- 2023-06-02
- Certified
- 2023-06-02
Frequently asked questions
- What is Robert Zielinski's NPI number?
- Robert Zielinski's National Provider Identifier (NPI) is 1821617762, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Zielinski's specialty?
- Robert Zielinski is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Zielinski located?
- Robert Zielinski's practice location on file with NPPES is 2401 W Belvedere Ave, Baltimore, MD 21215-5216.
- What is Robert Zielinski's phone number?
- The practice phone number listed in the NPPES registry for Robert Zielinski is (410) 601-0594.
- Does Robert Zielinski accept Medicare?
- Robert Zielinski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Zielinski's NPI active?
- Yes — Robert Zielinski's NPI (1821617762) is active in the NPPES registry as of the last update on 2023-06-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.