DR. MARK ALLEN CLAPP MD
NPI 1407122930
Obstetrics & Gynecology - Maternal & Fetal Medicine in Boston, MA
About Dr. Mark Allen Clapp Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK ALLEN CLAPP MD (NPI 1407122930) is an individual maternal & fetal medicine provider in Boston, Massachusetts, licensed in Massachusetts (26265862) and active in the NPI registry since March 2012. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2012).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Other Identifiers 1
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
Dr. Mark Allen Clapp 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 Mark Clapp 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 and New Hampshire enrollments
- 6,360 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Dover, NH 03820
- Reassigned Medicare billing, New Hampshire enrollment
- 559 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.
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 Mark Clapp's NPI number?
The NPI number for Mark Clapp is 1407122930. It was assigned to this individual provider in the NPPES registry on March 29, 2012.
Where is Mark Clapp located?
Mark Clapp practices at 55 Fruit St, Boston, MA 02114. The listed phone number is (617) 724-2229.
What is Mark Clapp's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.
Is Mark Clapp enrolled in Medicare?
Yes. Mark Clapp 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 Mark Clapp's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Clapp reassigns Medicare benefits to 3 organizations: Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA) and Wentworth Douglass Physician Corporation (Dover, NH). 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 Mark Clapp's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Clapp accept?
Health plans from WellSense Health Plan list Mark Clapp 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 Mark Clapp was last updated on October 31, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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. Mark Allen Clapp, MD · NPI 1407122930
Maternal & Fetal Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since March 29, 2012.
## Identity
- **NPI:** 1407122930 (Entity type: Individual)
- **Enumerated:** March 29, 2012
- **Primary specialty:** Obstetrics & Gynecology - Maternal & Fetal Medicine · taxonomy 207VM0101X
- **State license:** 26265862 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 FRUIT ST, Boston, MA 02114
- **Phone:** (617) 724-2229
## 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); Wentworth Douglass Physician Corporation (NPI 1336751825, Dover, NH) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** October 31, 2022
- **Other identifiers:** Medicaid 3117234 (NH)
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Source: [NPI Profile](https://npiprofile.com/npi/1407122930) · Data from the CMS NPPES public registry.