Alexander Granok, MD
NPI 1427010636 · Infectious Disease Physician · Merrimack, NH
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Granok, MD is a Infectious Disease Physician provider in Merrimack, NH (NPI 1427010636).
Provider details
- NPI number
- 1427010636
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 11273 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
947 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 564 | $80 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 96 | $94 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 76 | $132 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 64 | $132 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 55 | $17 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin | 60 | 19 |
| Rifampin | 58 | 11 |
| Ethambutol Hcl | 55 | — |
| Azithromycin | 52 | — |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 44 | 17 |
| Ceftriaxone Sodiumbrand: Ceftriaxone | 43 | 15 |
| Cephalexin | 42 | 13 |
| Vancomycin Hcl | 41 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$240 across 10 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
Registry dates
- Enumerated
- 2006-04-04
- Last updated
- 2009-05-07
Frequently asked questions
- What is Alexander Granok's NPI number?
- Alexander Granok's National Provider Identifier (NPI) is 1427010636, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Granok's specialty?
- Alexander Granok is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Granok located?
- Alexander Granok's practice location on file with NPPES is 399 Dw Hwy, Merrimack, NH 03054-4112.
- What is Alexander Granok's phone number?
- The practice phone number listed in the NPPES registry for Alexander Granok is (603) 429-1611.
- Does Alexander Granok accept Medicare?
- Alexander Granok is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander Granok's NPI active?
- Yes — Alexander Granok's NPI (1427010636) is active in the NPPES registry as of the last update on 2009-05-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.