Karen Grajewski, MD
NPI 1518351477 · Diagnostic Radiology Physician · Ann Arbor, MI
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Grajewski, MD is a Diagnostic Radiology Physician provider in Ann Arbor, MI (NPI 1518351477).
Provider details
- NPI number
- 1518351477
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 4301119185 (MI)
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
11 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
1,781 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) |
|---|---|---|
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 248 | $85 |
| X-Ray of Chest, 1 View71045 | 181 | $8 |
| X-Ray of Chest, 2 Views71046 | 143 | $10 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 135 | $9 |
| Nuclear Medicine Study From Skull Base to Mid-Thigh With Ct Scan78815 | 125 | $111 |
| Ct Scan of Chest With Contrast71260 | 106 | $53 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-03-27
- Last updated
- 2020-07-01
- Certified
- 2020-07-01
Frequently asked questions
- What is Karen Grajewski's NPI number?
- Karen Grajewski's National Provider Identifier (NPI) is 1518351477, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Grajewski's specialty?
- Karen Grajewski is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Grajewski located?
- Karen Grajewski's practice location on file with NPPES is 1500 E Medical Center Dr, Ann Arbor, MI 48109-5000.
- What is Karen Grajewski's phone number?
- The practice phone number listed in the NPPES registry for Karen Grajewski is (734) 936-4000.
- Does Karen Grajewski accept Medicare?
- Karen Grajewski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Grajewski's NPI active?
- Yes — Karen Grajewski's NPI (1518351477) is active in the NPPES registry as of the last update on 2020-07-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.