DR. JOHANNA MARGARET SEDDON MD
NPI 1699753681
Ophthalmology in Boston, MA
About Dr. Johanna Margaret Seddon Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHANNA MARGARET SEDDON MD (NPI 1699753681) is an individual ophthalmology provider in Boston, Massachusetts, licensed in Massachusetts (38282) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS, is affiliated with Umass Memorial Medical Center/university Campus, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Other Identifiers 3
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. Johanna Margaret Seddon 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
2Medicare enrollment records show Johanna Seddon reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02111
- Reassigned Medicare billing, Massachusetts enrollment
- 74 clinicians in this Medicare group
Worcester, MA 01655
- Reassigned Medicare billing, Massachusetts enrollment
- 2,902 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 5
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Umass Memorial Medical Center/University Campus
Acute Care Hospitals · Worcester, MAPhysician 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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 Johanna Seddon's NPI number?
The NPI number for Johanna Seddon is 1699753681. It was assigned to this individual provider in the NPPES registry on January 9, 2006.
Where is Johanna Seddon located?
Johanna Seddon practices at 10 Hawthorne Pl Ste 106, Boston, MA 02114. The listed phone number is (617) 523-0955.
What is Johanna Seddon's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Johanna Seddon enrolled in Medicare?
Yes. Johanna Seddon 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 Johanna Seddon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Johanna Seddon reassigns Medicare benefits to 2 organizations: Tufts Medical Center, Inc. (Boston, MA) and Umass Memorial Medical Group Inc (Worcester, 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 Johanna Seddon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Johanna Seddon affiliated with any hospitals?
According to CMS data, Johanna Seddon is affiliated with Umass Memorial Medical Center/University Campus.
When was this NPI record last updated?
The NPPES record for Johanna Seddon was last updated on October 27, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. Johanna Margaret Seddon, MD · NPI 1699753681
Ophthalmology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since January 9, 2006.
## Identity
- **NPI:** 1699753681 (Entity type: Individual)
- **Enumerated:** January 9, 2006
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** 38282 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 10 HAWTHORNE PL STE 106, Boston, MA 02114-2336
- **Phone:** (617) 523-0955 · **Fax:** (617) 523-5376
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Tufts Medical Center, Inc. (NPI 1730132515, Boston, MA); Umass Memorial Medical Group Inc (NPI 1760445373, Worcester, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Pittsburgh School Of Medicine, class of 1974
## Record status
- **NPPES last updated:** October 27, 2020
- **Other identifiers:** Other 038282 (MA); Other B33604 (MA); Medicaid 6172954 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1699753681) · Data from the CMS NPPES public registry.