Mark Altman, M.D.
NPI 1689652711 · Orthopaedic Surgery Physician · Hamden, CT
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Altman, M.D. is a Orthopaedic Surgery Physician provider in Hamden, CT (NPI 1689652711).
Provider details
- NPI number
- 1689652711
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 38149 (CT)
Specialties & taxonomies
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
20 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
867 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 186 | $98 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 156 | $138 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 124 | $181 |
| Injection Into Tendon Or Ligament20550 | 94 | $59 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 84 | $72 |
| X-Ray of Shoulder, Minimum of 2 Views73030 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Meloxicam | 24 |
| Celecoxib | 22 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 17 |
| Oxycodone Hcl | 14 |
| Diclofenac Sodium/Misoprostolbrand: Diclofenac Sodium-Misoprostol | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 350 Goose Ln Ste 203bGuilford, CT 06437-2158Phone: (203) 408-2700Fax: (203) 884-8201
Registry dates
- Enumerated
- 2006-01-09
- Last updated
- 2020-10-08
- Certified
- 2020-10-08
Frequently asked questions
- What is Mark Altman's NPI number?
- Mark Altman's National Provider Identifier (NPI) is 1689652711, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Altman's specialty?
- Mark Altman is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Altman located?
- Mark Altman's practice location on file with NPPES is 2200 Whitney Ave Ste 170, Hamden, CT 06518-3694.
- What is Mark Altman's phone number?
- The practice phone number listed in the NPPES registry for Mark Altman is (203) 408-2700.
- Does Mark Altman accept Medicare?
- Mark Altman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Altman's NPI active?
- Yes — Mark Altman's NPI (1689652711) is active in the NPPES registry as of the last update on 2020-10-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.