John Butter, MD
NPI 1629037064 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Butter, MD is a Internal Medicine Physician provider in Boston, MA (NPI 1629037064).
Provider details
- NPI number
- 1629037064
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036095458 (IL)
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
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
847 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 | 267 | $101 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 223 | $69 |
| 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 | 208 | $17 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 42 | $82 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 36 | $10 |
| Annual Alcohol Misuse Screening, 5 to 15 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 67 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 456 | 140 |
| Amlodipine Besylate | 210 | 64 |
| Losartan Potassium | 183 | 52 |
| Lisinopril | 161 | 53 |
| Levothyroxine Sodium | 130 | 37 |
| Rosuvastatin Calcium | 125 | 40 |
| Omeprazole |
Practice location
Mailing address
Additional practice locations (2)
- 680 N Lake Shore DrSuite 1000Chicago, IL 60611-4546Phone: (312) 695-9797
- 680 N Lake Shore DrSuite 1000Chicago, IL 60611-4546Phone: (312) 695-9797
Registry dates
- Enumerated
- 2006-03-23
- Last updated
- 2019-08-13
Frequently asked questions
- What is John Butter's NPI number?
- John Butter's National Provider Identifier (NPI) is 1629037064, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Butter's specialty?
- John Butter is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Butter located?
- John Butter's practice location on file with NPPES is 70 Francis St, Boston, MA 02115.
- What is John Butter's phone number?
- The practice phone number listed in the NPPES registry for John Butter is (857) 307-4100.
- Does John Butter accept Medicare?
- John Butter is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Butter's NPI active?
- Yes — John Butter's NPI (1629037064) is active in the NPPES registry as of the last update on 2019-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.