Daniel Tseytlin, DO
NPI 1629413398 · Rheumatology Physician · Nashua, NH
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel Tseytlin, DO is a Rheumatology Physician provider in Nashua, NH (NPI 1629413398).
Provider details
- NPI number
- 1629413398
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- OT015100 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 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
685 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 | 466 | $94 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 153 | $131 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 52 | $63 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 14 | $48 |
Typical Medicare-allowed amounts for these services range $48–$131 (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 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 208 | 55 |
| Prednisone | 199 | 79 |
| Allopurinol | 181 | 42 |
| Hydroxychloroquine Sulfate | 154 | 55 |
| Duloxetine Hcl | 85 | 31 |
| Colchicine | 69 | 22 |
| Adalimumabbrand: Humira(cf) Pen | 58 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-05-07
- Last updated
- 2020-06-09
- Certified
- 2020-06-09
Frequently asked questions
- What is Daniel Tseytlin's NPI number?
- Daniel Tseytlin's National Provider Identifier (NPI) is 1629413398, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel Tseytlin's specialty?
- Daniel Tseytlin is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel Tseytlin located?
- Daniel Tseytlin's practice location on file with NPPES is 168 Kinsley St Ste 10, Nashua, NH 03060-3634.
- What is Daniel Tseytlin's phone number?
- The practice phone number listed in the NPPES registry for Daniel Tseytlin is (603) 578-9363.
- Does Daniel Tseytlin accept Medicare?
- Daniel Tseytlin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel Tseytlin's NPI active?
- Yes — Daniel Tseytlin's NPI (1629413398) is active in the NPPES registry as of the last update on 2020-06-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.