Jonathan Friedman, M.D.
NPI 1639598519 · Diagnostic Radiology Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Friedman, M.D. is a Diagnostic Radiology Physician provider in Baltimore, MD (NPI 1639598519).
Provider details
- NPI number
- 1639598519
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 103167 (GA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
8,363 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) |
|---|---|---|
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 4,327 | $39 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 892 | $9 |
| X-Ray of Chest, 1 View71045 | 408 | $8 |
| Mri Scan of Pelvis Before and After Contrast72197 | 211 | $337 |
| Mri Scan of Abdomen Before and After Contrast74183 | 209 | $347 |
| Ct Scan Head Or Brain Without Contrast70450 | 198 | $38 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$46 across 2 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 (3)
- 400 Health Park BlvdSt Augustine, FL 32086-5784Phone: (904) 819-5155
- 743 Spring St NeGainesville, GA 30501-3715Phone: (770) 219-9000
- 2300 Opitz BlvdWoodbridge, VA 22191-3311Phone: (703) 523-1199
Registry dates
- Enumerated
- 2014-04-08
- Last updated
- 2025-09-02
- Certified
- 2025-09-02
Frequently asked questions
- What is Jonathan Friedman's NPI number?
- Jonathan Friedman's National Provider Identifier (NPI) is 1639598519, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Friedman's specialty?
- Jonathan Friedman is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Friedman located?
- Jonathan Friedman's practice location on file with NPPES is 601 N Caroline St, Baltimore, MD 21287-0006.
- What is Jonathan Friedman's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Friedman is (410) 955-9446.
- Does Jonathan Friedman accept Medicare?
- Jonathan Friedman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Friedman's NPI active?
- Yes — Jonathan Friedman's NPI (1639598519) is active in the NPPES registry as of the last update on 2025-09-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.