JOHN HENRY MASI DMD
NPI 1437686862
Dentist - Oral and Maxillofacial Surgery in Philadelphia, PA
About John Henry Masi Dmd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN HENRY MASI DMD (NPI 1437686862) is an individual oral and maxillofacial surgery provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (DS041293) and active in the NPI registry since May 2017. He is enrolled in Medicare PECOS and is a graduate of Other (2017).
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
John Henry Masi Dmd 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 Reassignment
Medicare enrollment records show John Masi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Voorhees, NJ 08043
- Reassigned Medicare billing, New Jersey enrollment
- 4 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 19107 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 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
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 Masi's NPI number?
The NPI number for John Masi is 1437686862. It was assigned to this individual provider in the NPPES registry on May 16, 2017.
Where is John Masi located?
John Masi practices at 909 Walnut St Rm 300, Philadelphia, PA 19107. The listed phone number is (215) 503-7118.
What is John Masi's specialty?
The primary specialty registered for this NPI is Dentist, specializing in Oral and Maxillofacial Surgery, with taxonomy code 1223S0112X.
Is John Masi enrolled in Medicare?
Yes. John Masi 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 organization bills Medicare for John Masi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Masi reassigns Medicare benefits to Optimum Oral Surgery Group LLC (Voorhees, NJ). The 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 Masi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Masi accept?
Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Humana list John Masi 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 Masi was last updated on April 3, 2021. 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.
# John Henry Masi, DMD · NPI 1437686862
Oral and Maxillofacial Surgery provider in Philadelphia, Pennsylvania. Individual provider, active in the CMS NPPES registry since May 16, 2017.
## Identity
- **NPI:** 1437686862 (Entity type: Individual)
- **Enumerated:** May 16, 2017
- **Primary specialty:** Dentist - Oral and Maxillofacial Surgery · taxonomy 1223S0112X
- **State license:** DS041293 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 909 WALNUT ST RM 300, Philadelphia, PA 19107-5211
- **Phone:** (215) 503-7118 · **Fax:** (215) 923-9189
## 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:** Optimum Oral Surgery Group LLC (NPI 1003264326, Voorhees, NJ), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** April 3, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1437686862) · Data from the CMS NPPES public registry.