Melissa Greywitt, FNP
NPI 1821629494 · Nurse Practitioner · Signal Mountain, TN
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Melissa Greywitt, FNP is a Nurse Practitioner provider in Signal Mountain, TN (NPI 1821629494).
Provider details
- NPI number
- 1821629494
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 27221 (TN)
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 tenure28% of score
6 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
232 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) |
|---|---|---|
| Automated Urinalysis Test81003 | 68 | $2 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 64 | $99 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 37 | $8 |
| Blood Glucose (sugar) Test Performed By Hand-Held Instrument82962 | 32 | $3 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 31 | $71 |
Typical Medicare-allowed amounts for these services range $2–$99 (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 · 53 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 84 | 30 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 82 | 37 |
| Atorvastatin Calcium | 82 | 28 |
| Lisinopril | 71 | 30 |
| Gabapentin | 70 | 17 |
| Omeprazole | 65 | 18 |
| Dapagliflozin Propanediol |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-01-31
- Last updated
- 2022-07-19
- Certified
- 2022-07-19
Frequently asked questions
- What is Melissa Greywitt's NPI number?
- Melissa Greywitt's National Provider Identifier (NPI) is 1821629494, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Greywitt's specialty?
- Melissa Greywitt is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Melissa Greywitt located?
- Melissa Greywitt's practice location on file with NPPES is 501 James Blvd, Signal Mountain, TN 37377-2219.
- What is Melissa Greywitt's phone number?
- The practice phone number listed in the NPPES registry for Melissa Greywitt is (305) 923-2309.
- Does Melissa Greywitt accept Medicare?
- Melissa Greywitt is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Melissa Greywitt's NPI active?
- Yes — Melissa Greywitt's NPI (1821629494) is active in the NPPES registry as of the last update on 2022-07-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.