DR. JOHN TIMOTHY WARING M.D.
NPI 1659594604
Anesthesiology in Boston, MA
About Dr. John Timothy Waring M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN TIMOTHY WARING M.D. (NPI 1659594604) is an individual anesthesiology provider in Boston, Massachusetts, licensed in California (A109920) and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS and is a graduate of Emory University School Of Medicine (2003).
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
Dr. John Timothy Waring M.d. 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 Waring reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Carmichael, CA 95608
- Reassigned Medicare billing, California enrollment
- 48 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.
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 John Waring's NPI number?
The NPI number for John Waring is 1659594604. It was assigned to this individual provider in the NPPES registry on April 10, 2007.
Where is John Waring located?
John Waring practices at 55 Fruit St Dept Of Anesthesia, Boston, MA 02114. The listed phone number is (802) 338-1597.
What is John Waring's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is John Waring enrolled in Medicare?
Yes. John Waring 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 Waring's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Waring reassigns Medicare benefits to Metropolitan Anesthesiology Consultants A Medical Group Inc (Carmichael, CA). 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 Waring's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Waring accept?
Health plans from Taro Health list John Waring 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 Waring was last updated on January 6, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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. John Timothy Waring, M.D. · NPI 1659594604
Anesthesiology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since April 10, 2007.
## Identity
- **NPI:** 1659594604 (Entity type: Individual)
- **Enumerated:** April 10, 2007
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A109920 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 55 FRUIT ST, DEPT OF ANESTHESIA, Boston, MA 02114-2621
- **Phone:** (802) 338-1597
## 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:** Metropolitan Anesthesiology Consultants A Medical Group Inc (NPI 1184671372, Carmichael, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Emory University School Of Medicine, class of 2003
## Record status
- **NPPES last updated:** January 6, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1659594604) · Data from the CMS NPPES public registry.