Dr Caitlin Margaret Richardson-royer, MD in Vallejo, CA

Dr Caitlin Margaret Richardson-royer, MD is a medicare enrolled "Internal Medicine - Nephrology" physician in Vallejo, California. Her current practice location is 975 Sereno Dr, Vallejo, California. You can reach out to her office (for appointments etc.) via phone at (707) 651-1000.

Dr Caitlin Margaret Richardson-royer is licensed to practice in California (license number A204088) 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 1922351881.

Contact Information

	Dr Caitlin Margaret Richardson-royer, MD
	975 Sereno Dr, Vallejo, CA 94589-2441
	(707) 651-1000
	Not Available

Map and Direction

Physician's Profile

Full Name	Dr Caitlin Margaret Richardson-royer
Gender	Female
Speciality	Internal Medicine - Nephrology
Location	975 Sereno Dr, Vallejo, California
Accepts Medicare Assignments	Medicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.

NPI Data:

NPI Number: 1922351881
Provider Enumeration Date: 10/17/2012
Last Update Date: 09/09/2025

Medicare PECOS Information:

PECOS PAC ID: 3375858400
Enrollment ID: I20150818004976

Medical Identifiers

Medical identifiers for Dr Caitlin Margaret Richardson-royer such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1922351881	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207RN0300X	Internal Medicine - Nephrology	A204088 (California)	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 Caitlin Margaret Richardson-royer allows following entities to bill medicare on her behalf.

Entity Name	Trihealth G Llc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1295862944 PECOS PAC ID: 0749222651 Enrollment ID: O20050601000358

Entity Name	Hospitalist Medicine Physicians Of Ohio, Professional Corporation
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1043572290 PECOS PAC ID: 3779749197 Enrollment ID: O20120730000162

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 Caitlin Margaret Richardson-royer 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 Address	Practice Location Address
Dr Caitlin Margaret Richardson-royer, MD 5820 Owens Dr, Pleasanton, CA 94588-3900 Ph: (925) 737-3798	Dr Caitlin Margaret Richardson-royer, MD 975 Sereno Dr, Vallejo, CA 94589-2441 Ph: (707) 651-1000

Reviews and Comments

Internal Medicine Doctors in Vallejo, CA

Dr. Joseph Ignatius Azalde, MD Nephrology Medicare: Not Enrolled in Medicare Practice Location: 1617 Broadway St, Vallejo, CA 94590 Phone: 707-556-3708 Fax: 707-556-3755
Dr. Shihfan Yeh, M.D. Nephrology Medicare: Accepting Medicare Assignments Practice Location: 975 Sereno Dr, Vallejo, CA 94589 Phone: 707-651-1077
Jeffrey T. Wei, MD Nephrology Medicare: Accepting Medicare Assignments Practice Location: 975 Sereno Dr, Vallejo, CA 94589 Phone: 707-651-1000
Lauran H. Mizock, MD Nephrology Medicare: Not Enrolled in Medicare Practice Location: 975 Sereno Dr, Vallejo, CA 94589 Phone: 707-651-1000
Scarlet Ophelia Mcclure, MD Nephrology Medicare: Medicare Enrolled Practice Location: 975 Sereno Dr, Vallejo, CA 94589 Phone: 707-651-2729
Dr. Chainarong Limvarapuss, MD Nephrology Medicare: Accepting Medicare Assignments Practice Location: 100 Hospital Dr, Suite # 110, Vallejo, CA 94589 Phone: 707-551-3300 Fax: 707-551-3301
Misa Stroker, M.D., PHARM.D. Nephrology Medicare: Accepting Medicare Assignments Practice Location: 300 Hospital Dr, Vallejo, CA 94589 Phone: 707-554-4444

Dr Caitlin Margaret Richardson-royer, MD - Medicare Internal Medicine in Vallejo, CA