Maxim Efremov, ACNP
NPI 1659334423 · Acute Care Nurse Practitioner · Winston Salem, NC
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maxim Efremov, ACNP is a Acute Care Nurse Practitioner provider in Winston Salem, NC (NPI 1659334423).
Provider details
- NPI number
- 1659334423
- Entity type
- Individual
- Primary specialty
- Acute Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ACNP
- Sex
- Male
- Sole proprietor
- No
- License
- R45111 (NM)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
20 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
240 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 200 | $77 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 25 | $106 |
| X-Ray of Lower and Sacral Spine, 2-3 Views72100 | 15 | $9 |
Typical Medicare-allowed amounts for these services range $9–$106 (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 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 54 | 27 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 27 | 18 |
| Oxycodone Hcl | 14 | — |
| Pregabalin | 13 | — |
| Methocarbamol | 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
Registry dates
- Enumerated
- 2006-04-11
- Last updated
- 2014-03-04
Frequently asked questions
- What is Maxim Efremov's NPI number?
- Maxim Efremov's National Provider Identifier (NPI) is 1659334423, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maxim Efremov's specialty?
- Maxim Efremov is listed in the NPPES registry with a primary specialty of Acute Care Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Maxim Efremov located?
- Maxim Efremov's practice location on file with NPPES is Medical Center Blvd, Winston Salem, NC 27157-0001.
- What is Maxim Efremov's phone number?
- The practice phone number listed in the NPPES registry for Maxim Efremov is (336) 716-2011.
- Does Maxim Efremov accept Medicare?
- Maxim Efremov is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maxim Efremov's NPI active?
- Yes — Maxim Efremov's NPI (1659334423) is active in the NPPES registry as of the last update on 2014-03-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.