Ann Gray, M.D.
NPI 1831153824 · Family Medicine Physician · Marshall, MO
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ann Gray, M.D. is a Family Medicine Physician provider in Marshall, MO (NPI 1831153824).
Provider details
- NPI number
- 1831153824
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 112737 (MO)
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 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
330 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 140 | $166 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 77 | $67 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 68 | $113 |
| Critical Care, First 30-74 Minutes99291 | 28 | $199 |
| Emergency Department Visit With Straightforward Medical Decision Making99282 | 17 | $40 |
Typical Medicare-allowed amounts for these services range $40–$199 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 38 | 35 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 21 | 20 |
| Azithromycin | 19 | 18 |
| Doxycycline Hyclate | 18 | 17 |
| Ondansetronbrand: Ondansetron Odt | 18 | 18 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 15 | 15 |
| Methylprednisolone |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-14
- Last updated
- 2025-01-21
- Certified
- 2025-01-21
Frequently asked questions
- What is Ann Gray's NPI number?
- Ann Gray's National Provider Identifier (NPI) is 1831153824, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ann Gray's specialty?
- Ann Gray is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ann Gray located?
- Ann Gray's practice location on file with NPPES is 2305 S Highway 65, Marshall, MO 65340-3702.
- What is Ann Gray's phone number?
- The practice phone number listed in the NPPES registry for Ann Gray is (660) 886-7431.
- Does Ann Gray accept Medicare?
- Ann Gray is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ann Gray's NPI active?
- Yes — Ann Gray's NPI (1831153824) is active in the NPPES registry as of the last update on 2025-01-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.