Catherine A Ryan, MD - Medicare Obstetrics & Gynecology in Boulder, CO

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Catherine A Ryan, MD is a medicare enrolled "Obstetrics & Gynecology - Gynecology" physician in Boulder, Colorado. Her current practice location is 4745 Arapahoe Ave Ste 110, Boulder, Colorado. You can reach out to her office (for appointments etc.) via phone at (303) 444-5110.

Catherine A Ryan is licensed to practice in Colorado (license number 40191) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1730295940.

Contact Information

Catherine A Ryan, MD
4745 Arapahoe Ave Ste 110,
Boulder, CO 80303-1082
(303) 444-5110
(303) 444-7457

Map and Direction




Physician's Profile

Full NameCatherine A Ryan
GenderFemale
SpecialityObstetrics & Gynecology - Gynecology
Location4745 Arapahoe Ave Ste 110, Boulder, Colorado
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1730295940
  • Provider Enumeration Date: 08/21/2006
  • Last Update Date: 04/06/2017
  Medicare PECOS Information:
  • PECOS PAC ID: 3779570585
  • Enrollment ID: I20040426000996

Medical Identifiers

Medical identifiers for Catherine A Ryan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1730295940NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207VG0400XObstetrics & Gynecology - Gynecology 40191 (Colorado)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. Catherine A Ryan allows following entities to bill medicare on her behalf.
Entity NameObstetrix Medical Group Of Colorado Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1497779276
PECOS PAC ID: 6709776651
Enrollment ID: O20040316001040

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. Catherine A Ryan 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
Catherine A Ryan, MD
4745 Arapahoe Ave Ste 110,
Boulder, CO 80303-1082

Ph: (303) 444-5110		Catherine A Ryan, MD
4745 Arapahoe Ave Ste 110,
Boulder, CO 80303-1082

Ph: (303) 444-5110

Reviews and Comments


Obstetrics & Gynecology Doctors in Boulder, CO

Diane Anthea Christopher, MD
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 4745 Arapahoe Ave, 200, Boulder, CO 80303
Phone: 303-938-4710    
Elizabeth W Bush,
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 580 Mohawk Dr, Boulder, CO 80303
Phone: 303-554-5111    
Mary A Macsalka, M.D.
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 4745 Arapahoe Ave Ste 110, Boulder, CO 80303
Phone: 303-444-5110    Fax: 303-444-7457
Mr. Joseph Cohen, DO
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 5377 Manhattan Cir Ste 204, Boulder, CO 80303
Phone: 720-273-3568    Fax: 720-612-4271
Breanna Tomlin, MD
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 2525 13th St, Boulder, CO 80304
Phone: 303-449-6050    Fax: 720-565-4132
Dr. Heather Brighthoffmeyer, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 4745 Arapahoe Ave, Suite 200, Boulder, CO 80303
Phone: 303-938-4710    
Christine C Hansen, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 4745 Arapahoe Ave Ste 110, Boulder, CO 80303
Phone: 303-444-5110    Fax: 303-444-7457

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.