Mary Greer, FNP-C
NPI 1891427753 · Family Nurse Practitioner · Lufkin, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Greer, FNP-C is a Family Nurse Practitioner provider in Lufkin, TX (NPI 1891427753).
Provider details
- NPI number
- 1891427753
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- 1085922 (TX)
Specialties & taxonomies
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
3 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
122 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 Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, at Least 10 Minutes99307 | 122 | $33 |
Typical Medicare-allowed amounts for these services range $33–$33 (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 · 57 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lacosamide | 145 | 13 |
| Esomeprazole Magnesium | 121 | 22 |
| Lisinopril | 104 | 14 |
| Levothyroxine Sodium | 71 | 13 |
| Montelukast Sodium | 66 | — |
| Metformin Hcl | 65 | 11 |
| Amlodipine Besylate | 58 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-06-29
- Last updated
- 2022-06-29
- Certified
- 2022-06-29
Frequently asked questions
- What is Mary Greer's NPI number?
- Mary Greer's National Provider Identifier (NPI) is 1891427753, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Greer's specialty?
- Mary Greer is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Greer located?
- Mary Greer's practice location on file with NPPES is 409 Gaslight Blvd, Lufkin, TX 75904-3158.
- What is Mary Greer's phone number?
- The practice phone number listed in the NPPES registry for Mary Greer is (936) 634-2227.
- Does Mary Greer accept Medicare?
- Mary Greer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Greer's NPI active?
- Yes — Mary Greer's NPI (1891427753) is active in the NPPES registry as of the last update on 2022-06-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.