DR. JOHN T LEFFERS O.D.
NPI 1235369349
Optometrist in Providence, RI
About Dr. John T Leffers O.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN T LEFFERS O.D. (NPI 1235369349) is an individual optometrist in Providence, Rhode Island, licensed in Rhode Island (ODTG00540) and active in the NPI registry since July 2009. He is enrolled in Medicare PECOS and is a graduate of Other (2009).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. John T Leffers O.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show John Leffers reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Cranston, RI 02920
- Reassigned Medicare billing, Rhode Island enrollment
- 20 clinicians in this Medicare group
Dedham, MA 02026
- Reassigned Medicare billing, Massachusetts enrollment
- Medicare enrollment name: Mass Optometric Associates, PLLC
- 98 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02903 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 18
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Leffers's NPI number?
The NPI number for John Leffers is 1235369349. It was assigned to this individual provider in the NPPES registry on July 23, 2009.
Where is John Leffers located?
John Leffers practices at 891 Westminster St, Providence, RI 02903. The listed phone number is (401) 331-7850.
What is John Leffers's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is John Leffers enrolled in Medicare?
Yes. John Leffers is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Leffers's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Leffers reassigns Medicare benefits to 2 organizations: Rhode Island Optometrics, LLC (Cranston, RI) and Mass Optometric Associates, P.C. (Dedham, MA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Leffers's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Leffers accept?
Health plans from Anthem Blue Cross and Blue Sheld, Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and Blue Cross and Blue Shield of Texas list John Leffers as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for John Leffers was last updated on July 23, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. John T Leffers, O.D. · NPI 1235369349
Optometrist provider in Providence, Rhode Island. Individual provider, active in the CMS NPPES registry since July 23, 2009.
## Identity
- **NPI:** 1235369349 (Entity type: Individual)
- **Enumerated:** July 23, 2009
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** ODTG00540 (Rhode Island)
- **Sole proprietor:** No
## Practice location
- **Address:** 891 WESTMINSTER ST, Providence, RI 02903-4020
- **Phone:** (401) 331-7850 · **Fax:** (401) 274-4739
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Rhode Island Optometrics, LLC (NPI 1275024135, Cranston, RI); Mass Optometric Associates, P.C. (NPI 1831399039, Dedham, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2009
## Record status
- **NPPES last updated:** July 23, 2009
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Source: [NPI Profile](https://npiprofile.com/npi/1235369349) · Data from the CMS NPPES public registry.