DR. JENNIFER A MULLIGAN MD
NPI 1700347242
Family Medicine - Obesity Medicine in Boston, MA
About Dr. Jennifer A Mulligan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JENNIFER A MULLIGAN MD (NPI 1700347242) is an individual obesity medicine provider in Boston, Massachusetts, licensed in New York (334136) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS and is a graduate of Medical College Of Georgia School Of Medicine (2019).
NPPES Registry Identity
Specialties & Licenses 5
Other Names 1
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
Dr. Jennifer A Mulligan 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 Jennifer Mulligan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Kingston, NY 12401
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Nuvance Health Medical Practice PC
- 638 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 3
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 02114 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
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 Jennifer Mulligan's NPI number?
The NPI number for Jennifer Mulligan is 1700347242. It was assigned to this individual provider in the NPPES registry on March 27, 2019. The provider is also known as Yoon Ji Ahn.
Where is Jennifer Mulligan located?
Jennifer Mulligan practices at 55 Fruit St, Boston, MA 02114. The listed phone number is (617) 726-2000.
What is Jennifer Mulligan's specialty?
The primary specialty registered for this NPI is Family Medicine, specializing in Obesity Medicine, with taxonomy code 207QB0002X.
Is Jennifer Mulligan enrolled in Medicare?
Yes. Jennifer Mulligan 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 Jennifer Mulligan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jennifer Mulligan reassigns Medicare benefits to 3 organizations: Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA) and Health Quest Medical Practice, PC (Kingston, NY). 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 Jennifer Mulligan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Jennifer Mulligan was last updated on January 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months 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. Jennifer A Mulligan, MD · NPI 1700347242
Obesity Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since March 27, 2019.
## Identity
- **NPI:** 1700347242 (Entity type: Individual)
- **Enumerated:** March 27, 2019
- **Primary specialty:** Family Medicine - Obesity Medicine · taxonomy 207QB0002X
- **State license:** 334136 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 55 FRUIT ST, Boston, MA 02114-2696
- **Phone:** (617) 726-2000
## 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): Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); Health Quest Medical Practice, PC (NPI 1558906610, Kingston, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Georgia School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** January 27, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1700347242) · Data from the CMS NPPES public registry.