Senior Doc Missouri PC - Medicare Primary Care in Saint Louis, MO

Senior Doc Missouri PC is a medicare enrolled primary clinic (Family Medicine) in Saint Louis, Missouri. The current practice location for Senior Doc Missouri PC is 2055 Craigshire Dr Ste 410, Saint Louis, Missouri. For appointments, you can reach them via phone at (855) 434-7763. The mailing address for Senior Doc Missouri PC is 5 Hutton Centre Dr Ste 950, Santa Ana, California and phone number is (855) 434-7763.

Senior Doc Missouri PC is licensed to practice in (license number ). The clinic also participates in the medicare program and its NPI number is 1023983848. This medical practice accepts medicare insurance (which means this clinic accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance). However, please confirm if they accept your insurance at (855) 434-7763.

Contact Information

Senior Doc Missouri PC
2055 Craigshire Dr Ste 410
Saint Louis
MO 63146-4012
(855) 434-7763
Not Available

Map and Direction


Primary Care Clinic Profile

Full NameSenior Doc Missouri PC
SpecialityFamily Medicine
Location2055 Craigshire Dr Ste 410, Saint Louis, Missouri
Authorized Official Name and PositionJohn Geiss (CEO)
Authorized Official Contact8554347763
Accepts Medicare InsuranceYes. This clinic participates in medicare program and accept medicare insurance.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Senior Doc Missouri PC
5 Hutton Centre Dr Ste 950
Santa Ana
CA 92707-8744

Ph: (855) 434-7763
Senior Doc Missouri PC
2055 Craigshire Dr Ste 410
Saint Louis
MO 63146-4012

Ph: (855) 434-7763

NPI Details:

NPI Number1023983848
Provider Enumeration Date10/09/2025
Last Update Date10/09/2025
Certification Date10/09/2025

Medicare PECOS Information:

Medicare PECOS PAC ID1850883042
Medicare Enrollment IDO20251125001857

Medical Identifiers

Medical identifiers for Senior Doc Missouri PC such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1023983848NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine ()Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Senior Doc Missouri PC acts as a billing entity for following providers:
Provider NameJeffrey John Thomas
Provider TypePractitioner - Internal Medicine
Provider IdentifiersNPI Number: 1932337136
PECOS PAC ID: 7315101003
Enrollment ID: I20251013001801
Provider NameAnthony Marcus Yniguez
Provider TypePractitioner - Nurse Practitioner
Provider IdentifiersNPI Number: 1871185686
PECOS PAC ID: 2769882331
Enrollment ID: I20251211000729
Provider NameKellie Marie Pacheco
Provider TypePractitioner - Nurse Practitioner
Provider IdentifiersNPI Number: 1326728668
PECOS PAC ID: 1951756519
Enrollment ID: I20251211001350
Provider NameAlexi Yarashevich
Provider TypePractitioner - Nurse Practitioner
Provider IdentifiersNPI Number: 1306340831
PECOS PAC ID: 6406119304
Enrollment ID: I20251211001545
Provider NameJohn Geiss
Provider TypePractitioner - Family Practice
Provider IdentifiersNPI Number: 1053651497
PECOS PAC ID: 5890933071
Enrollment ID: I20251215001713
Provider NameCassie Kaur Dundon
Provider TypePractitioner - Nurse Practitioner
Provider IdentifiersNPI Number: 1831685395
PECOS PAC ID: 5092057661
Enrollment ID: I20260206001820
Provider NameChristina Nelson
Provider TypePractitioner - Nurse Practitioner
Provider IdentifiersNPI Number: 1790499218
PECOS PAC ID: 1759753098
Enrollment ID: I20260212000480

Reviews and Comments

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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.