John Diggs, M.D.
NPI 1235226655 · Internal Medicine Physician · Monson, MA
John Diggs, M.D. is a Internal Medicine Physician provider in Monson, MA (NPI 1235226655).
Provider details
- NPI number
- 1235226655
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 71456 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Lorazepam | 23 |
| Amlodipine Besylate | 23 |
| Losartan Potassium | 22 |
| Atorvastatin Calcium | 20 |
| Apixabanbrand: Eliquis | 20 |
| Lisinopril | 18 |
| Carisoprodol | 17 |
| Prednisone | 17 |
| Clonazepam | 14 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-06
- Last updated
- 2016-11-28
Frequently asked questions
- What is John Diggs's NPI number?
- John Diggs's National Provider Identifier (NPI) is 1235226655, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Diggs's specialty?
- John Diggs is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Diggs located?
- John Diggs's practice location on file with NPPES is 2 Main Street, Monson, MA 01057-1302.
- What is John Diggs's phone number?
- The practice phone number listed in the NPPES registry for John Diggs is (413) 370-8209.
- Is John Diggs's NPI active?
- Yes — John Diggs's NPI (1235226655) is active in the NPPES registry as of the last update on 2016-11-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.