Dorothy Sizemore, DO - Medicare Family Practice in Billings, MT

Dorothy Sizemore, DO is a medicare enrolled "Family Medicine" physician in Billings, Montana. She graduated from medical school in 2014 and has 10 years of diverse experience with area of expertise as Family Practice. She is a member of the group practice Yellowstone City-county Health Department and her current practice location is 123 S 27th St, Billings, Montana. You can reach out to her office (for appointments etc.) via phone at (406) 247-3306.

Dorothy Sizemore is licensed to practice in Montana (license number 58761) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1205248465.

Contact Information

Dorothy Sizemore, DO
123 S 27th St,
Billings, MT 59101-4227
(406) 247-3306
(406) 247-3307

Map and Direction




Physician's Profile

Full NameDorothy Sizemore
GenderFemale
SpecialityFamily Practice
Experience10 Years
Location123 S 27th St, Billings, Montana
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dorothy Sizemore graduated from medical school in 2014
  NPI Data:
  • NPI Number: 1205248465
  • Provider Enumeration Date: 05/22/2014
  • Last Update Date: 01/10/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 1355660135
  • Enrollment ID: I20170915002036

Medical Identifiers

Medical identifiers for Dorothy Sizemore such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1205248465NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 58761 (Montana)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Billings ClinicBillings, MTHospital
St Vincent HealthcareBillings, MTHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Yellowstone City-county Health Department145625915939

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. Dorothy Sizemore allows following entities to bill medicare on her behalf.
Entity NameYellowstone City-county Health Department
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1841219698
PECOS PAC ID: 1456259159
Enrollment ID: O20031219000249
Entity NameBozeman Health Deaconess Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1619347390
PECOS PAC ID: 4688984164
Enrollment ID: O20151112002559

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. Dorothy Sizemore 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
Dorothy Sizemore, DO
123 S 27th St,
Billings, MT 59101-4227

Ph: (406) 247-3220
Dorothy Sizemore, DO
123 S 27th St,
Billings, MT 59101-4227

Ph: (406) 247-3306

Reviews and Comments


Family Medicine Doctors in Billings, MT

Michael D. Monday, MD
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Phone: 406-373-3500    Fax: 406-373-3520
Aaron James Audet, M.D.
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Angel M. Eads, MD
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Phone: 406-247-3220    Fax: 406-651-6406
John Konow, MD
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Phone: 406-247-3350    Fax: 406-247-3389
Cynthia Kay Brewer, D.O.
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Dr. Amy Solomon, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 123 S 27th St, Billings, MT 59101
Phone: 406-247-3350    Fax: 406-247-3389
Lawrence A. Hemmer, MD
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Medicare: Not Enrolled in Medicare
Practice Location: 2675 Central Ave, Billings, MT 59102
Phone: 406-238-2500    

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).

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