Patrick Grayson, MD
NPI 1720029275 · Emergency Medicine Physician · Chattanooga, TN
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patrick Grayson, MD is a Emergency Medicine Physician provider in Chattanooga, TN (NPI 1720029275).
Provider details
- NPI number
- 1720029275
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 36478 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
226 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) |
|---|---|---|
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 63 | $44 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 62 | $109 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 39 | $159 |
| Initial Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99221 | 32 | $74 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 30 | $64 |
Typical Medicare-allowed amounts for these services range $44–$159 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 59 | 44 |
| Tramadol Hcl | 41 | 33 |
| Butalb/Acetaminophen/Caffeinebrand: Butalbital-Acetaminophen-Caffe | 25 | — |
| Azithromycin | 24 | 21 |
| Cyclobenzaprine Hcl | 21 | 21 |
| Zolpidem Tartrate | 20 | — |
| Pregabalin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-08
- Last updated
- 2025-05-22
- Certified
- 2025-05-22
Frequently asked questions
- What is Patrick Grayson's NPI number?
- Patrick Grayson's National Provider Identifier (NPI) is 1720029275, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patrick Grayson's specialty?
- Patrick Grayson is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Patrick Grayson located?
- Patrick Grayson's practice location on file with NPPES is 1425 S Moore Rd Ste E, Chattanooga, TN 37412-2836.
- What is Patrick Grayson's phone number?
- The practice phone number listed in the NPPES registry for Patrick Grayson is (865) 406-0802.
- Does Patrick Grayson accept Medicare?
- Patrick Grayson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Patrick Grayson's NPI active?
- Yes — Patrick Grayson's NPI (1720029275) is active in the NPPES registry as of the last update on 2025-05-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.