Garrett Walworth, M.D.
NPI 1598794927 · Diagnostic Radiology Physician · Royal Oak, MI
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Garrett Walworth, M.D. is a Diagnostic Radiology Physician provider in Royal Oak, MI (NPI 1598794927).
Provider details
- NPI number
- 1598794927
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4301076072 (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
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
246 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 Chest With Contrast71260 | 52 | $53 |
| Nuclear Medicine Study From Skull Base to Mid-Thigh With Ct Scan78815 | 42 | $110 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 32 | $85 |
| Ct Scan of Chest With Contrast71260 | 21 | $53 |
| Ct Scan of Chest Without Contrast71250 | 20 | $48 |
| Low Dose Ct Scan of Chest for Lung Cancer Screening71271 | 19 | $49 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-30
- Last updated
- 2019-09-10
Frequently asked questions
- What is Garrett Walworth's NPI number?
- Garrett Walworth's National Provider Identifier (NPI) is 1598794927, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Garrett Walworth's specialty?
- Garrett Walworth is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Garrett Walworth located?
- Garrett Walworth's practice location on file with NPPES is 3601 W 13 Mile Rd, Royal Oak, MI 48073-6712.
- What is Garrett Walworth's phone number?
- The practice phone number listed in the NPPES registry for Garrett Walworth is (248) 898-6064.
- Does Garrett Walworth accept Medicare?
- Garrett Walworth is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Garrett Walworth's NPI active?
- Yes — Garrett Walworth's NPI (1598794927) is active in the NPPES registry as of the last update on 2019-09-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.