Gregory Underwood, MD
NPI 1871513986 · Internal Medicine Physician · Charlotte, NC
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Underwood, MD is a Internal Medicine Physician provider in Charlotte, NC (NPI 1871513986).
Provider details
- NPI number
- 1871513986
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 29068 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Acyclovir | 17 |
| Famotidine | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 1000 Blythe BlvdCmc Annex 1st FloorCharlotte, NC 28203-5812Phone: (704) 355-0720
Registry dates
- Enumerated
- 2006-07-20
- Last updated
- 2021-03-29
Frequently asked questions
- What is Gregory Underwood's NPI number?
- Gregory Underwood's National Provider Identifier (NPI) is 1871513986, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Underwood's specialty?
- Gregory Underwood is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Underwood located?
- Gregory Underwood's practice location on file with NPPES is 4525 Cameron Valley Pkwy, Charlotte, NC 28211-4369.
- What is Gregory Underwood's phone number?
- The practice phone number listed in the NPPES registry for Gregory Underwood is (704) 355-5100.
- Does Gregory Underwood accept Medicare?
- Gregory Underwood is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Underwood's NPI active?
- Yes — Gregory Underwood's NPI (1871513986) is active in the NPPES registry as of the last update on 2021-03-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.