Robert Isaacs, M.D.
NPI 1669443446 · Diagnostic Radiology Physician · Germantown, MD
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Isaacs, M.D. is a Diagnostic Radiology Physician provider in Germantown, MD (NPI 1669443446).
Provider details
- NPI number
- 1669443446
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D38257 (MD)
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
20 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
5,120 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 702 | $9 |
| Ct Scan Head Or Brain Without Contrast70450 | 328 | $42 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 307 | $350 |
| Ct Scan of Heart With Evaluation of Blood Vessel Calcium75571 | 306 | $116 |
| X-Ray of Chest, 2 Views71046 | 262 | $11 |
| Mri Scan of Lower Spinal Canal Without Contrast72148 | 226 | $214 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-30
- Last updated
- 2009-07-22
Frequently asked questions
- What is Robert Isaacs's NPI number?
- Robert Isaacs's National Provider Identifier (NPI) is 1669443446, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Isaacs's specialty?
- Robert Isaacs is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Isaacs located?
- Robert Isaacs's practice location on file with NPPES is 20410 Observation Dr, Germantown, MD 20876-4000.
- What is Robert Isaacs's phone number?
- The practice phone number listed in the NPPES registry for Robert Isaacs is (301) 948-5700.
- Does Robert Isaacs accept Medicare?
- Robert Isaacs is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Isaacs's NPI active?
- Yes — Robert Isaacs's NPI (1669443446) is active in the NPPES registry as of the last update on 2009-07-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.