Dennis Tan, NP-C
NPI 1255903696 · Nurse Practitioner · Cambridge, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dennis Tan, NP-C is a Nurse Practitioner provider in Cambridge, MA (NPI 1255903696).
Provider details
- NPI number
- 1255903696
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP-C
- Sex
- Male
- Sole proprietor
- No
- License
- RN2313462 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service 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
445 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) |
|---|---|---|
| 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 | 122 | $15 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 103 | $84 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 99 | $67 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 78 | $118 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 28 | $96 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 21 | 11 |
| Tramadol Hcl | 19 | — |
| Prednisone | 19 | 12 |
| Lorazepam | 17 | — |
| Oxycodone Hcl | 13 | — |
| Famotidine | 12 | — |
| Mirtazapine | 12 | — |
Practice location
Mailing address
Additional practice locations (1)
- 745 River StHyde Park, MA 02136-6441Phone: (617) 364-2588
Registry dates
- Enumerated
- 2021-07-14
- Last updated
- 2023-02-23
- Certified
- 2023-02-23
Frequently asked questions
- What is Dennis Tan's NPI number?
- Dennis Tan's National Provider Identifier (NPI) is 1255903696, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dennis Tan's specialty?
- Dennis Tan is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Dennis Tan located?
- Dennis Tan's practice location on file with NPPES is 300 Mount Auburn St Ste 517, Cambridge, MA 02138-5665.
- What is Dennis Tan's phone number?
- The practice phone number listed in the NPPES registry for Dennis Tan is (617) 492-3500.
- Does Dennis Tan accept Medicare?
- Dennis Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dennis Tan's NPI active?
- Yes — Dennis Tan's NPI (1255903696) is active in the NPPES registry as of the last update on 2023-02-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.