Kathryn Koestner, NP
NPI 1477106086 · Gerontology Nurse Practitioner · Boston, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathryn Koestner, NP is a Gerontology Nurse Practitioner provider in Boston, MA (NPI 1477106086).
Provider details
- NPI number
- 1477106086
- Entity type
- Individual
- Primary specialty
- Gerontology Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- RN2292372 (MA)
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 tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 39 | 39 |
| Valganciclovir Hcl | 31 | 31 |
| Famotidine | 25 | 25 |
| Prednisone | 19 | 18 |
| Omeprazole | 12 | 12 |
| Oxycodone Hcl | 12 | 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 , 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
- 2019-07-23
- Last updated
- 2024-04-16
- Certified
- 2024-04-16
Frequently asked questions
- What is Kathryn Koestner's NPI number?
- Kathryn Koestner's National Provider Identifier (NPI) is 1477106086, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathryn Koestner's specialty?
- Kathryn Koestner is listed in the NPPES registry with a primary specialty of Gerontology Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Kathryn Koestner located?
- Kathryn Koestner's practice location on file with NPPES is 725 Albany Street, Suite 3a, Boston, MA 02118.
- What is Kathryn Koestner's phone number?
- The practice phone number listed in the NPPES registry for Kathryn Koestner is (617) 414-4861.
- Does Kathryn Koestner accept Medicare?
- Kathryn Koestner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathryn Koestner's NPI active?
- Yes — Kathryn Koestner's NPI (1477106086) is active in the NPPES registry as of the last update on 2024-04-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.