Stuart Klein, MD
NPI 1275744633 · Internal Medicine Physician · Foxboro, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stuart Klein, MD is a Internal Medicine Physician provider in Foxboro, MA (NPI 1275744633).
Provider details
- NPI number
- 1275744633
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 231901 (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
953 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 | 438 | $138 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 145 | $140 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 111 | $99 |
| 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 | 78 | $17 |
| Administration of Influenza Virus VaccineG0008 | 64 | $35 |
| Admn Sarscov2 Vacc 1 Dose |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 91 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 472 | 141 |
| Rosuvastatin Calcium | 298 | 98 |
| Lisinopril | 296 | 90 |
| Amlodipine Besylate | 291 | 87 |
| Omeprazole | 208 | 56 |
| Metoprolol Succinate | 170 | 55 |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-25
- Last updated
- 2009-05-22
Frequently asked questions
- What is Stuart Klein's NPI number?
- Stuart Klein's National Provider Identifier (NPI) is 1275744633, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stuart Klein's specialty?
- Stuart Klein is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stuart Klein located?
- Stuart Klein's practice location on file with NPPES is 20 Patriot Pl, Foxboro, MA 02035-1375.
- What is Stuart Klein's phone number?
- The practice phone number listed in the NPPES registry for Stuart Klein is (508) 718-4050.
- Does Stuart Klein accept Medicare?
- Stuart Klein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stuart Klein's NPI active?
- Yes — Stuart Klein's NPI (1275744633) is active in the NPPES registry as of the last update on 2009-05-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.