Chengtin Tseng, M.D.
NPI 1396365250 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chengtin Tseng, M.D. is a Internal Medicine Physician provider in Boston, MA (NPI 1396365250).
Provider details
- NPI number
- 1396365250
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
83% 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 95 | $181 |
| Critical Care, First 30-74 Minutes99291 | 17 | $208 |
Typical Medicare-allowed amounts for these services range $181–$208 (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.
Practice location
Mailing address
Additional practice locations (1)
- 24 Hospital Ave.Danbury, CT 06810-6099Phone: (203) 739-8105Fax: (203) 749-9092
Registry dates
- Enumerated
- 2020-04-21
- Last updated
- 2023-05-11
- Certified
- 2023-05-11
Frequently asked questions
- What is Chengtin Tseng's NPI number?
- Chengtin Tseng's National Provider Identifier (NPI) is 1396365250, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chengtin Tseng's specialty?
- Chengtin Tseng is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Chengtin Tseng located?
- Chengtin Tseng's practice location on file with NPPES is 75 Francis St, Boston, MA 02115-6110.
- What is Chengtin Tseng's phone number?
- The practice phone number listed in the NPPES registry for Chengtin Tseng is (617) 732-5500.
- Does Chengtin Tseng accept Medicare?
- Chengtin Tseng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chengtin Tseng's NPI active?
- Yes — Chengtin Tseng's NPI (1396365250) is active in the NPPES registry as of the last update on 2023-05-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.