Katherine Koh, MD, MSC
NPI 1245643345 · Psychiatry Physician · Boston, MA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Koh, MD, MSC is a Psychiatry Physician provider in Boston, MA (NPI 1245643345).
Provider details
- NPI number
- 1245643345
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MSC
- Sex
- Female
- Sole proprietor
- No
- License
- 269334 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Clonazepam | 31 |
| Trazodone Hcl | 18 |
| Gabapentin | 14 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 14 |
| Hydroxyzine Hcl | 13 |
| Lorazepam | 13 |
| Lamotrigine | 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
Additional practice locations (1)
- 780 Albany StBoston, MA 02118-2755Phone: (857) 654-1000
Registry dates
- Enumerated
- 2014-06-05
- Last updated
- 2018-07-27
Frequently asked questions
- What is Katherine Koh's NPI number?
- Katherine Koh's National Provider Identifier (NPI) is 1245643345, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Koh's specialty?
- Katherine Koh is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Koh located?
- Katherine Koh's practice location on file with NPPES is Massachusetts General Hospital, Boston, MA 02114.
- What is Katherine Koh's phone number?
- The practice phone number listed in the NPPES registry for Katherine Koh is (617) 724-5600.
- Does Katherine Koh accept Medicare?
- Katherine Koh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Koh's NPI active?
- Yes — Katherine Koh's NPI (1245643345) is active in the NPPES registry as of the last update on 2018-07-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.