DR. WILLIAM DINAN M.D.
NPI 1154438489
Internal Medicine - Pulmonary Disease in New York, NY
About Dr. William Dinan M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM DINAN M.D. (NPI 1154438489) is an individual pulmonary disease provider in New York, New York, licensed in New York (180364) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
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 (PECOS)
Dr. William Dinan M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show William Dinan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New York, NY 10002
- Reassigned Medicare billing, New York enrollment
- 1,615 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 10003 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.
NEW YORK, NY 10003
NEW YORK, NY 10003
NEW YORK, NY 10003
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 William Dinan's NPI number?
The NPI number for William Dinan is 1154438489. It was assigned to this individual provider in the NPPES registry on August 24, 2006.
Where is William Dinan located?
William Dinan practices at 227 E 19th St 502 D, New York, NY 10003. The listed phone number is (212) 995-6659.
What is William Dinan's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is William Dinan enrolled in Medicare?
Yes. William Dinan is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for William Dinan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Dinan reassigns Medicare benefits to New York City Health And Hospitals Corporation (New York, NY). 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 William Dinan'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 William Dinan was last updated on July 9, 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.
# Dr. William Dinan, M.D. · NPI 1154438489
Pulmonary Disease physician in New York, New York. Individual provider, active in the CMS NPPES registry since August 24, 2006.
## Identity
- **NPI:** 1154438489 (Entity type: Individual)
- **Enumerated:** August 24, 2006
- **Primary specialty:** Internal Medicine - Pulmonary Disease · taxonomy 207RP1001X
- **State license:** 180364 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 227 E 19TH ST, 502 D, New York, NY 10003-2602
- **Phone:** (212) 995-6659
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** New York City Health And Hospitals Corporation (NPI 1497859573, New York, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 9, 2007
- **Other identifiers:** Medicare UPIN F95908 (NY); Medicare ID-Type Unspecified 01K581 (NY); Medicaid 01592236 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1154438489) · Data from the CMS NPPES public registry.