Daniel Katzman, MD
NPI 1609138130 · Internal Medicine Physician · Cambridge, MA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel Katzman, MD is a Internal Medicine Physician provider in Cambridge, MA (NPI 1609138130).
Provider details
- NPI number
- 1609138130
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 290692 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
14 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
1,132 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 538 | $81 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 259 | $122 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 120 | $119 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 90 | $51 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 45 | $84 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-06-11
- Last updated
- 2026-05-26
- Certified
- 2026-05-26
Frequently asked questions
- What is Daniel Katzman's NPI number?
- Daniel Katzman's National Provider Identifier (NPI) is 1609138130, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel Katzman's specialty?
- Daniel Katzman is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel Katzman located?
- Daniel Katzman's practice location on file with NPPES is 330 Mount Auburn St, Cambridge, MA 02138-5597.
- What is Daniel Katzman's phone number?
- The practice phone number listed in the NPPES registry for Daniel Katzman is (617) 499-5112.
- Does Daniel Katzman accept Medicare?
- Daniel Katzman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel Katzman's NPI active?
- Yes — Daniel Katzman's NPI (1609138130) is active in the NPPES registry as of the last update on 2026-05-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.