Dr John M Riddell, MD - Medicare Anesthesiology in Concord, NH

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Dr John M Riddell, MD is a medicare enrolled "Anesthesiology" physician in Concord, New Hampshire. He went to Medical College Of Wisconsin and graduated in 1999 and has 25 years of diverse experience with area of expertise as Anesthesiology. He is a member of the group practice Concord Hospital Inc, Steward Medical Group Inc and his current practice location is 250 Pleasant St., Concord, New Hampshire. You can reach out to his office (for appointments etc.) via phone at (603) 789-9103.

Dr John M Riddell is licensed to practice in New Hampshire (license number 14640) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1174593073.

Contact Information

Dr John M Riddell, MD
250 Pleasant St.,
Concord, NH 03301-7559
(603) 789-9103
(603) 227-7832

Map and Direction




Physician's Profile

Full NameDr John M Riddell
GenderMale
SpecialityAnesthesiology
Experience25 Years
Location250 Pleasant St., Concord, New Hampshire
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr John M Riddell attended and graduated from Medical College Of Wisconsin in 1999
  NPI Data:
  • NPI Number: 1174593073
  • Provider Enumeration Date: 01/24/2006
  • Last Update Date: 12/31/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 2668523002
  • Enrollment ID: I20091123000444

Medical Identifiers

Medical identifiers for Dr John M Riddell such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1174593073NPI-NPPES
1016847MedicaidVT
02394943MedicaidNY
30209066MedicaidNH

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207L00000XAnesthesiology 228118 (New York)Secondary
207L00000XAnesthesiology 14640 (New Hampshire)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Nashoba Valley Medical CenterAyer, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Concord Hospital Inc6103721790488
Steward Medical Group Inc28606887281338

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr John M Riddell allows following entities to bill medicare on his behalf.
Entity NameNorth American Partners In Anesthesia New Hampshire Llp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1306838701
PECOS PAC ID: 6901710946
Enrollment ID: O20031114000273
Entity NameConcord Hospital Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1194778571
PECOS PAC ID: 6103721790
Enrollment ID: O20040405000916
Entity NameAnesthesia Associates Professional Association
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1881791150
PECOS PAC ID: 3375532435
Enrollment ID: O20040512000620
Entity NameDartmouth-hitchcock Clinic
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548210198
PECOS PAC ID: 4183537509
Enrollment ID: O20040809000442
Entity NameApollo Medical Group Of Northridge Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1427699115
PECOS PAC ID: 3173957594
Enrollment ID: O20191218000438
Entity NameHospitalist Medicine Physicians Of New York - Patchogue Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1366920993
PECOS PAC ID: 6406183821
Enrollment ID: O20230808001939

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr John M Riddell is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr John M Riddell, MD
250 Pleasant St,
Concord, NH 03301-7559

Ph: (603) 789-9103		Dr John M Riddell, MD
250 Pleasant St.,
Concord, NH 03301-7559

Ph: (603) 789-9103

Reviews and Comments


Anesthesiology Doctors in Concord, NH

Kathryn S Lemmon, MD
Anesthesiology
Medicare: Not Enrolled in Medicare
Practice Location: 246 Pleasant St, Suite 105 B Eye Anesthesia Of Concord Pllc, Concord, NH 03301
Phone: 603-224-6503    
Nathanael A. Slater, D.O.
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 250 Pleasant St, Concord, NH 03301
Phone: 603-789-9103    Fax: 603-227-7832
Dr. Victoria Kogan, MD
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 250 Pleasant St, Concord, NH 03301
Phone: 603-789-9103    Fax: 603-227-7832
Gregory F. Martin, M.D.
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 250 Pleasant St, Concord, NH 03301
Phone: 603-789-9103    Fax: 603-227-7832
Roman Plachinta, M.D.
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 1 Pillsbury St, Ste 202, Concord, NH 03301
Phone: 603-224-4776    Fax: 603-228-2113
Margaret A Pitts, M.D.
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 250 Pleasant St., Concord, NH 03301
Phone: 603-789-9103    Fax: 603-227-7832

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.