Alexandra Kolossovsky, PA-C
NPI 1538836820 · Physician Assistant · Boston, MA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexandra Kolossovsky, PA-C is a Physician Assistant provider in Boston, MA (NPI 1538836820).
Provider details
- NPI number
- 1538836820
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 027055 (NY)
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
4 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
112 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 | 61 | $81 |
| 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 | 51 | $14 |
Typical Medicare-allowed amounts for these services range $14–$81 (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 · 71 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 209 | 96 |
| Gabapentin | 134 | 47 |
| Amlodipine Besylate | 128 | 63 |
| Levothyroxine Sodium | 113 | 51 |
| Pantoprazole Sodium | 86 | 31 |
| Lisinopril | 86 | 49 |
| Famotidine | 79 |
Practice location
Mailing address
Additional practice locations (1)
- 454 E Broad StRochester, NY 14607-1724Phone: (585) 276-7640
Registry dates
- Enumerated
- 2021-08-25
- Last updated
- 2025-08-27
- Certified
- 2025-08-27
Frequently asked questions
- What is Alexandra Kolossovsky's NPI number?
- Alexandra Kolossovsky's National Provider Identifier (NPI) is 1538836820, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexandra Kolossovsky's specialty?
- Alexandra Kolossovsky is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Alexandra Kolossovsky located?
- Alexandra Kolossovsky's practice location on file with NPPES is 75 Francis St, Boston, MA 02115-6110.
- What is Alexandra Kolossovsky's phone number?
- The practice phone number listed in the NPPES registry for Alexandra Kolossovsky is (617) 732-5500.
- Does Alexandra Kolossovsky accept Medicare?
- Alexandra Kolossovsky is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexandra Kolossovsky's NPI active?
- Yes — Alexandra Kolossovsky's NPI (1538836820) is active in the NPPES registry as of the last update on 2025-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.