Nolan Williams, - Medicare Psychiatry & Neurology in Napa, CA

  1. Home
  2. Psychiatry & Neurology
  3. CA
  4. Napa
Nolan Williams, is a medicare enrolled "Psychiatry & Neurology - Psychiatry" physician in Napa, California. His current practice location is 1580 1st St, Napa, California. You can reach out to his office (for appointments etc.) via phone at (707) 258-8757.

Nolan Williams is licensed to practice in California (license number A159440) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1811339641.

Contact Information

Nolan Williams,
1580 1st St,
Napa, CA 94559-2841
(707) 258-8757
Not Available

Map and Direction




Physician's Profile

Full NameNolan Williams
GenderMale
SpecialityPsychiatry & Neurology - Psychiatry
Location1580 1st St, Napa, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1811339641
  • Provider Enumeration Date: 07/22/2013
  • Last Update Date: 05/16/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 5991939282
  • Enrollment ID: I20200407002635

Medical Identifiers

Medical identifiers for Nolan Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1811339641NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084P0800XPsychiatry & Neurology - Psychiatry A159440 (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. Nolan Williams allows following entities to bill medicare on his behalf.
Entity NameAlameda Health System
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1740332931
PECOS PAC ID: 3779494521
Enrollment ID: O20031110000764
Entity NameCounty Of Ventura
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629167457
PECOS PAC ID: 7911810171
Enrollment ID: O20031112000587
Entity NameTraditions Psychiatry Group, P.c
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1083802979
PECOS PAC ID: 8729984539
Enrollment ID: O20031211000677
Entity NameCounty Of Humboldt
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1871676213
PECOS PAC ID: 4082516950
Enrollment ID: O20040121001146

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. Nolan Williams 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
Nolan Williams,
Po Box 412,
Green Mountain Falls, CO 80819-0412

Ph: (316) 734-5280		Nolan Williams,
1580 1st St,
Napa, CA 94559-2841

Ph: (707) 258-8757

Reviews and Comments


Psychiatry & Neurology Doctors in Napa, CA

Javed Iqbal, MD
Psychiatry & Neurology
Medicare: Medicare Enrolled
Practice Location: 2100 Napa-vallejo Highway, Napa, CA 94558
Phone: 707-253-5000    Fax: 707-253-5513
Dr. Richard James Forde, M.D.
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 2261 Elm St, Building D, Napa, CA 94559
Phone: 707-253-4727    Fax: 707-253-4815
Mr. Laurentiu Dumitrescu, M.D.
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 2100 Napa Vallejo Hwy, Napa, CA 94558
Phone: 774-826-1570    
Joel Steven Mostow, M.D.
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 2100 Napa Vallejo Hwy., Napa, CA 94558
Phone: 707-253-5654    Fax: 707-253-5097
Dr. Margaret A Schlatter, MD
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 3421 Valle Verde Dr, Napa, CA 94558
Phone: 707-252-6546    Fax: 707-252-0942
Dr. Domingo Ordillas Laguitan Jr., MD
Psychiatry & Neurology
Medicare: Medicare Enrolled
Practice Location: 2100 Napa Vallejo Hwy, Napa, CA 94558
Phone: 707-253-5764    Fax: 707-253-5513
Dr. Siva Yoganathan, M.D.
Psychiatry & Neurology
Medicare: Medicare Enrolled
Practice Location: 2100 Napa Vallejo Hwy, Napa, CA 94558
Phone: 707-253-5000    Fax: 707-253-5513

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.