Dr Cynthia M Mullen, MD - Medicare Gastroenterology in Walnut Creek, CA

Dr Cynthia M Mullen, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Walnut Creek, California. She went to Tulane University School Of Medicine and graduated in 2003 and has 21 years of diverse experience with area of expertise as Gastroenterology. She is a member of the group practice Bass Medical Group and her current practice location is 2637 Shadelands Dr, Walnut Creek, California. You can reach out to her office (for appointments etc.) via phone at (925) 322-2372.

Dr Cynthia M Mullen is licensed to practice in California (license number A125601) 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 1013123140.

Contact Information

Dr Cynthia M Mullen, MD
2637 Shadelands Dr,
Walnut Creek, CA 94598-2512
(925) 322-2372
(925) 322-6720



Physician's Profile

Full NameDr Cynthia M Mullen
GenderFemale
SpecialityGastroenterology
Experience21 Years
Location2637 Shadelands Dr, Walnut Creek, California
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:
  • Dr Cynthia M Mullen attended and graduated from Tulane University School Of Medicine in 2003
  NPI Data:
  • NPI Number: 1013123140
  • Provider Enumeration Date: 05/15/2007
  • Last Update Date: 12/06/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 6305031584
  • Enrollment ID: I20150414002728

Medical Identifiers

Medical identifiers for Dr Cynthia M Mullen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1013123140NPI-NPPES
A125601OtherMEDICAL LICENSE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology A125601 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
John Muir Medical Center - Walnut Creek CampusWalnut creek, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Bass Medical Group9032111281309

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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 Cynthia M Mullen allows following entities to bill medicare on her behalf.
Entity NameJohn Muir Trauma Physicians Billing Service
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093864837
PECOS PAC ID: 3476542515
Enrollment ID: O20050420001452

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Entity NameBass Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1174253405
PECOS PAC ID: 9032111281
Enrollment ID: O20070201000181

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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 Cynthia M Mullen 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 Cynthia M Mullen, MD
2637 Shadelands Dr,
Walnut Creek, CA 94598-2512

Ph: (925) 322-2372
Dr Cynthia M Mullen, MD
2637 Shadelands Dr,
Walnut Creek, CA 94598-2512

Ph: (925) 322-2372

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Read more News

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Internal Medicine Doctors in Walnut Creek, CA

Dr. Joseph Patrick Henry, M.D.
Gastroenterology
Medicare: May Accept Medicare Assignments
Practice Location: 1220 Rossmoor Pkwy, Walnut Creek, CA 94595
Phone: 925-947-3393    Fax: 925-947-3396
Mr. Ramin Khashayar, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 1399 Ygnacio Valley Rd, Ste 14, Walnut Creek, CA 94598
Phone: 925-939-3050    Fax: 925-939-3057
Dr. Hennessey Tseng, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 1450 Treat Blvd, Suite 220b, Walnut Creek, CA 94597
Phone: 925-937-1770    Fax: 925-937-0630
Dr. Ali-reza Barmaki, M.D.
Gastroenterology
Medicare: May Accept Medicare Assignments
Practice Location: 1220 Rossmoor Pkwy, Walnut Creek, CA 94595
Phone: 925-947-3393    Fax: 925-947-3396
Mr. David Nathanson,
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 320 Lennon Ln, Walnut Creek, CA 94598
Phone: 925-906-2000    
Mark D Nathan, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 106 La Casa Via, #140, Walnut Creek, CA 94598
Phone: 925-274-2860    Fax: 925-932-4527

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