Melissa Grinnell, PA-C
NPI 1427300847 · Physician Assistant · Greenville, SC
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Melissa Grinnell, PA-C is a Physician Assistant provider in Greenville, SC (NPI 1427300847).
Provider details
- NPI number
- 1427300847
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 1848 (SC)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
475 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 154 | $100 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 124 | $132 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 89 | $71 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 77 | $88 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 16 | $99 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 259 | 161 |
| Famotidine | 142 | 91 |
| Pantoprazole Sodium | 85 | 60 |
| Linaclotidebrand: Linzess | 77 | 30 |
| Dicyclomine Hcl | 41 | 23 |
| Esomeprazole Magnesium | 33 | 17 |
| Lipase/Protease/Amylasebrand: Creon | 29 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$369 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 890 W Faris Rd Ste 310Greenville, SC 29605-4281Phone: (864) 455-8300Fax: (864) 455-8310
Registry dates
- Enumerated
- 2012-10-09
- Last updated
- 2024-12-11
- Certified
- 2024-12-11
Frequently asked questions
- What is Melissa Grinnell's NPI number?
- Melissa Grinnell's National Provider Identifier (NPI) is 1427300847, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Grinnell's specialty?
- Melissa Grinnell is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Melissa Grinnell located?
- Melissa Grinnell's practice location on file with NPPES is 131 Commonwealth Dr Ste 390, Greenville, SC 29615-4837.
- What is Melissa Grinnell's phone number?
- The practice phone number listed in the NPPES registry for Melissa Grinnell is (864) 335-7555.
- Does Melissa Grinnell accept Medicare?
- Melissa Grinnell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Melissa Grinnell's NPI active?
- Yes — Melissa Grinnell's NPI (1427300847) is active in the NPPES registry as of the last update on 2024-12-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.