What is John Riddell's NPI number?

John Riddell's National Provider Identifier (NPI) is 1174593073, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Riddell's specialty?

John Riddell is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).

Where is John Riddell located?

John Riddell's practice location on file with NPPES is 250 Pleasant St., Concord, NH 03301-7559.

What is John Riddell's phone number?

The practice phone number listed in the NPPES registry for John Riddell is (603) 789-9103.

Does John Riddell accept Medicare?

John Riddell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is John Riddell's NPI active?

Yes — John Riddell's NPI (1174593073) is active in the NPPES registry as of the last update on 2023-12-31.

IndividualActiveAccepts Medicare

John Riddell, MD

NPI 1174593073 · Anesthesiology Physician · Concord, NH

Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)

John Riddell, MD is a Anesthesiology Physician provider in Concord, NH (NPI 1174593073).

Provider details

NPI number: 1174593073
Entity type: Individual
Primary specialty: Anesthesiology PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 228118 (NY)

Specialties & taxonomies

Anesthesiology PhysicianPrimary207L00000XLicense 14640 (NH)
Allopathic & Osteopathic Physicians
Anesthesiology Physician207L00000XLicense 228118 (NY)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(82/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure25% of score
20 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
4 documented practice locations
Medicare service volume (vs. specialty peers)25% of score
97 Medicare services, 2024 (ranked within specialty)
Open Payments transparency10% of score
Has Open Payments disclosures (2024)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731	36	$122
Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811	36	$121
Anesthesia for Exam of Colon Using an Endoscope00812	25	$96

Typical Medicare-allowed amounts for these services range $96–$122 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$233 across 10 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Practice location

250 Pleasant St.

Concord, NH 03301-7559

Phone: (603) 789-9103

Fax: (603) 227-7832

Street-level locationGet directions

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Mailing address

250 Pleasant St