Daniel Chen, MD
NPI 1578598629 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel Chen, MD is a Internal Medicine Physician provider in Boston, MA (NPI 1578598629).
Provider details
- NPI number
- 1578598629
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 224385 (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
19 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
110 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 76 | $102 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 34 | $69 |
Typical Medicare-allowed amounts for these services range $69–$102 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 79 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 208 | 25 |
| Atorvastatin Calcium | 205 | 62 |
| Omeprazole | 147 | 41 |
| Hydrochlorothiazide | 143 | 42 |
| Amlodipine Besylate | 142 | 46 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 114 | 24 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2023-05-26
- Certified
- 2023-05-18
Frequently asked questions
- What is Daniel Chen's NPI number?
- Daniel Chen's National Provider Identifier (NPI) is 1578598629, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel Chen's specialty?
- Daniel Chen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel Chen located?
- Daniel Chen's practice location on file with NPPES is 801 Massachusetts Ave, Boston, MA 02118-2526.
- What is Daniel Chen's phone number?
- The practice phone number listed in the NPPES registry for Daniel Chen is (617) 414-5951.
- Does Daniel Chen accept Medicare?
- Daniel Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel Chen's NPI active?
- Yes — Daniel Chen's NPI (1578598629) is active in the NPPES registry as of the last update on 2023-05-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.