Joanna Gratton, DO
NPI 1518158005 · Psychiatry Physician · Greenville, SC
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joanna Gratton, DO is a Psychiatry Physician provider in Greenville, SC (NPI 1518158005).
Provider details
- NPI number
- 1518158005
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- DO2314 (ME)
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
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
167 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 Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 92 | $114 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 40 | $76 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 18 | $166 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 17 | $110 |
Typical Medicare-allowed amounts for these services range $76–$166 (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)
- 2 Springbrook DrBiddeford, ME 04005-9443Phone: (207) 282-1500Fax: (207) 282-2581
Registry dates
- Enumerated
- 2007-08-08
- Last updated
- 2025-06-03
- Certified
- 2025-05-05
Frequently asked questions
- What is Joanna Gratton's NPI number?
- Joanna Gratton's National Provider Identifier (NPI) is 1518158005, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joanna Gratton's specialty?
- Joanna Gratton is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Joanna Gratton located?
- Joanna Gratton's practice location on file with NPPES is 701 Grove Rd Fl 1, Greenville, SC 29605-4210.
- What is Joanna Gratton's phone number?
- The practice phone number listed in the NPPES registry for Joanna Gratton is (864) 455-7899.
- Does Joanna Gratton accept Medicare?
- Joanna Gratton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joanna Gratton's NPI active?
- Yes — Joanna Gratton's NPI (1518158005) is active in the NPPES registry as of the last update on 2025-06-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.