JONATHAN ALFRED FLETCHER MD
NPI 1891713392
Medical Genetics - Clinical Cytogenetics in Boston, MA
About Jonathan Alfred Fletcher Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JONATHAN ALFRED FLETCHER MD (NPI 1891713392) is an individual clinical cytogenetics provider in Boston, Massachusetts, licensed in Massachusetts (55007) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of Boston University School Of Medicine (1981).
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 and accepts Medicare assignment
Jonathan Alfred Fletcher Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Jonathan Fletcher reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Massachusetts General Hospital
Acute Care Hospitals · Boston, MABrigham And Women's Hospital
Acute Care Hospitals · Boston, MAOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02115
BOSTON, MA 02115
BOSTON, MA 02115
BOSTON, MA 02115
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 Jonathan Fletcher's NPI number?
The NPI number for Jonathan Fletcher is 1891713392. It was assigned to this individual provider in the NPPES registry on July 17, 2006.
Where is Jonathan Fletcher located?
Jonathan Fletcher practices at 75 Francis St Brigham And Womens Hospital Department Of Pathology, Boston, MA 02115. The listed phone number is (617) 732-7883.
What is Jonathan Fletcher's specialty?
The primary specialty registered for this NPI is Medical Genetics, specializing in Clinical Cytogenetics, with taxonomy code 207SC0300X.
Is Jonathan Fletcher enrolled in Medicare?
Yes. Jonathan Fletcher is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Jonathan Fletcher's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jonathan Fletcher reassigns Medicare benefits to 3 organizations: Brigham & Womens Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA) and Massachusetts General Physicians Organization Inc (Boston, 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 Jonathan Fletcher's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Jonathan Fletcher accept?
Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Jonathan Fletcher 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.
Is Jonathan Fletcher affiliated with any hospitals?
According to CMS data, Jonathan Fletcher is affiliated with Massachusetts General Hospital and Brigham And Women's Hospital.
When was this NPI record last updated?
The NPPES record for Jonathan Fletcher was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Jonathan Alfred Fletcher, MD · NPI 1891713392
Clinical Cytogenetics physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since July 17, 2006.
## Identity
- **NPI:** 1891713392 (Entity type: Individual)
- **Enumerated:** July 17, 2006
- **Primary specialty:** Medical Genetics - Clinical Cytogenetics · taxonomy 207SC0300X
- **State license:** 55007 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 75 FRANCIS ST, BRIGHAM AND WOMENS HOSPITAL DEPARTMENT OF PATHOLOGY, Boston, MA 02115-6110
- **Phone:** (617) 732-7883
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Boston University School Of Medicine, class of 1981
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1891713392) · Data from the CMS NPPES public registry.