Dr Gregory J Shirk, DC - Medicare Chiropractor in Mason City, IA

Dr Gregory J Shirk, DC is a medicare enrolled "Chiropractor" provider in Mason City, Iowa. He went to Palmer College Chiropractic - Davenport and graduated in 1995 and has 29 years of diverse experience with area of expertise as Chiropractic. His current practice location is 630 1st St Nw, Mason City, Iowa. You can reach out to his office (for appointments etc.) via phone at (641) 423-4455.

Dr Gregory J Shirk is licensed to practice in Iowa (license number A05882) 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 1629064464.

Contact Information

Dr Gregory J Shirk, DC
630 1st St Nw,
Mason City, IA 50401-2947
(641) 423-4455
(641) 423-0354

Map and Direction




Healthcare Provider's Profile

Full NameDr Gregory J Shirk
GenderMale
SpecialityChiropractic
Experience29 Years
Location630 1st St Nw, Mason City, Iowa
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 Gregory J Shirk attended and graduated from Palmer College Chiropractic - Davenport in 1995
  NPI Data:
  • NPI Number: 1629064464
  • Provider Enumeration Date: 09/27/2005
  • Last Update Date: 11/19/2014
  Medicare PECOS Information:
  • PECOS PAC ID: 0244130532
  • Enrollment ID: I20040112000364

Medical Identifiers

Medical identifiers for Dr Gregory J Shirk such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1629064464NPI-NPPES
0121657MedicaidIA
59606OtherIABCBS

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
111N00000XChiropractor A05882 (Iowa)Primary

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 Gregory J Shirk allows following entities to bill medicare on his behalf.
Provider NameShirk Pc
Provider TypePart B Supplier - Clinic/group Practice
Provider IdentifiersNPI Number: 1558673442
PECOS PAC ID: 0042334245
Enrollment ID: O20100825000073

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 Gregory J Shirk 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 Gregory J Shirk, DC
630 1st St Nw,
Mason City, IA 50401-2947

Ph: (641) 423-4455
Dr Gregory J Shirk, DC
630 1st St Nw,
Mason City, IA 50401-2947

Ph: (641) 423-4455

Reviews and Comments


Chiropractor in Mason City, IA

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Dr. Patrick Robert Trenary, D.C.
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Phone: 641-424-5171    Fax: 641-423-1014
Dr. David William Haas, DC
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Dr. Scott Redman, DC
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Phone: 641-450-1100    
Active Family Chiropractic Llc
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Practice Location: 122 N Federal Ave, Mason City, IA 50401
Phone: 641-201-1975    Fax: 641-201-1975

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.