DR. JOHN M RIDDELL MD
NPI 1174593073
Anesthesiology in Concord, NH
About Dr. John M Riddell Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN M RIDDELL MD (NPI 1174593073) is an individual anesthesiology provider in Concord, New Hampshire, licensed in New Hampshire (14640) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Parkland Medical Center, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. John M Riddell Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
12Medicare enrollment records show John Riddell reassigns Medicare billing to 12 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Concord, NH 03301
- Reassigned Medicare billing, New Hampshire enrollment
- 636 clinicians in this Medicare group
Concord, NH 03301
- Reassigned Medicare billing, New Hampshire enrollment
- 98 clinicians in this Medicare group
Derry, NH 03038
- Reassigned Medicare billing, New Hampshire enrollment
- 29 clinicians in this Medicare group
Hampstead, NH 03841
- Reassigned Medicare billing, New Hampshire enrollment
- 2,620 clinicians in this Medicare group
Nashua, NH 03060
- Reassigned Medicare billing, New Hampshire enrollment
- 132 clinicians in this Medicare group
Salem, NH 03079
- Reassigned Medicare billing, New Hampshire enrollment
- 83 clinicians in this Medicare group
Nashua, NH 03062
- Reassigned Medicare billing, New Hampshire enrollment
- 23 clinicians in this Medicare group
Keene, NH 03431
- Reassigned Medicare billing, New Hampshire enrollment
- 2,999 clinicians in this Medicare group
Concord, MA 01742
- Reassigned Medicare billing, Massachusetts enrollment
- 21 clinicians in this Medicare group
Fall River, MA 02720
- Reassigned Medicare billing, Massachusetts enrollment
- 192 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Parkland Medical Center
Acute Care Hospitals · Derry, NHOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Riddell's NPI number?
The NPI number for John Riddell is 1174593073. It was assigned to this individual provider in the NPPES registry on January 24, 2006.
Where is John Riddell located?
John Riddell practices at 250 Pleasant St., Concord, NH 03301. The listed phone number is (603) 789-9103.
What is John Riddell's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is John Riddell enrolled in Medicare?
Yes. John Riddell is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Riddell's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Riddell reassigns Medicare benefits to 12 organizations: Concord Hospital, Inc. (Concord, NH), Anesthesia Associates Professional Association (Concord, NH), Anesthesia Associates Of New England PC (Derry, NH), Mary Hitchcock Memorial Hospital (Hampstead, NH), North American Partners In Anesthesia New Hampshire LLP (Nashua, NH) and 7 more organizations, listed in the Medicare section above. 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 John Riddell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Riddell accept?
Health plans from Anthem Blue Cross and Blue Shield, Taro Health and WellSense Health Plan list John Riddell 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.
Is John Riddell affiliated with any hospitals?
According to CMS data, John Riddell is affiliated with Parkland Medical Center.
When was this NPI record last updated?
The NPPES record for John Riddell was last updated on December 31, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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 M Riddell, MD · NPI 1174593073
Anesthesiology physician in Concord, New Hampshire. Individual provider, active in the CMS NPPES registry since January 24, 2006.
## Identity
- **NPI:** 1174593073 (Entity type: Individual)
- **Enumerated:** January 24, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 14640 (New Hampshire)
- **Sole proprietor:** No
## Practice location
- **Address:** 250 PLEASANT ST., Concord, NH 03301-7559
- **Phone:** (603) 789-9103 · **Fax:** (603) 227-7832
## 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:** 12 organizations under Medicare reassignment (form CMS-855R): Concord Hospital, Inc. (NPI 1194778571, Concord, NH); Anesthesia Associates Professional Association (NPI 1881791150, Concord, NH); Anesthesia Associates Of New England PC (NPI 1861950651, Derry, NH); Mary Hitchcock Memorial Hospital (NPI 1699584219, Hampstead, NH); North American Partners In Anesthesia New Hampshire LLP (NPI 1306838701, Nashua, NH); and 7 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Wisconsin, class of 1999
## Record status
- **NPPES last updated:** December 31, 2023
- **Other identifiers:** Medicaid 1016847 (VT); Medicaid 02394943 (NY); Medicaid 30209066 (NH)
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Source: [NPI Profile](https://npiprofile.com/npi/1174593073) · Data from the CMS NPPES public registry.