Ryan Grieger, MD
NPI 1942760251 · Anesthesiology Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Grieger, MD is a Anesthesiology Physician provider in Phoenix, AZ (NPI 1942760251).
Provider details
- NPI number
- 1942760251
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
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 tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
33 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) |
|---|---|---|
| Anesthesia for Bone Marrow Aspiration And/Or Biopsy at Pelvic Bone01112 | 20 | $119 |
| Anesthesia for Other Procedure on Neck Area (1 Year Or Older)00320 | 13 | $188 |
Typical Medicare-allowed amounts for these services range $119–$188 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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.
Practice location
Mailing address
Additional practice locations (1)
- 410 W 10th AveColumbus, OH 43210-1240Phone: (614) 688-8942
Registry dates
- Enumerated
- 2019-03-22
- Last updated
- 2023-06-02
- Certified
- 2023-06-02
Frequently asked questions
- What is Ryan Grieger's NPI number?
- Ryan Grieger's National Provider Identifier (NPI) is 1942760251, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Grieger's specialty?
- Ryan Grieger is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Ryan Grieger located?
- Ryan Grieger's practice location on file with NPPES is 4605 E Elwood St Ste 500, Phoenix, AZ 85040-1978.
- What is Ryan Grieger's phone number?
- The practice phone number listed in the NPPES registry for Ryan Grieger is (602) 200-9021.
- Does Ryan Grieger accept Medicare?
- Ryan Grieger is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Grieger's NPI active?
- Yes — Ryan Grieger's NPI (1942760251) 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.