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DR. CHARLES HUDSON MD
NPI 1679549281
Psychiatry & Neurology - Psychiatry in Calistoga, CA

Active since February 23, 2006PECOS EnrolledAccepts Medicare Assignment
913 WASHINGTON ST, CALISTOGA, CA 94515(707) 942-0844(707) 942-0852 Get Directions Write a Review

NPPES record last updated: February 14, 2012. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Charles Hudson Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CHARLES HUDSON MD (NPI 1679549281) is an individual psychiatry provider in Calistoga, California, licensed in California (C34859) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS and is a graduate of Louisiana State University School Of Medicine In New Orleans (1971).

NPPES Registry Identity

NPI1679549281
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. CHARLES HUDSONCredential: MD
Location Address913 WASHINGTON STCalistoga, CA 94515-1433
Mailing Address1001 Adams St, Ste 102Saint Helena, CA 94574-1107 · (707) 968-2863 · Fax (707) 963-9185
Phone(707) 942-0844
Fax(707) 942-0852
Sole ProprietorNo
Medical School CMSLouisiana State University School Of Medicine In New OrleansGraduated 1971
Enumeration DateFebruary 23, 2006
Last NPPES UpdateFebruary 14, 2012
✔ NPI 1679549281 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in CA · C34859
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
913 WASHINGTON ST, Calistoga, CA 94515
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Other Identifiers 1

Medicare UPINA35751CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Charles Hudson Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6204998792
PECOS Enrollment IDI20081217000331
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Charles Hudson reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Adventist Health Clearlake Hospital Inc.
25 mi
Critical Access
15630 18TH AVE
Clearlake, CA 95422
  • Reassigned Medicare billing, California enrollment
  • 182 clinicians in this Medicare group
NPI 1124018031 (707) 994-6486
Ukiah Adventist Hospital
52 mi
General Acute Care Hospital
275 HOSPITAL DR
Ukiah, CA 95482
  • Reassigned Medicare billing, California enrollment
  • 221 clinicians in this Medicare group
NPI 1235120676 (707) 463-7360
Willits Hospital Inc.
78 mi
Critical Access
1 MARCELA DRIVE
Willits, CA 95490
  • Reassigned Medicare billing, California enrollment
  • 134 clinicians in this Medicare group
NPI 1356339543 (707) 459-6801

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
61 services39 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94515 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$192.16 typical visit price
range $65.08 – $192.16
Typical copayment $48.04 (range $16.27 – $48.04)
Most-billed visit code 99205
Established Patient
$80.32 typical visit price
range $21.86 – $157.83
Typical copayment $20.08 (range $5.46 – $39.45)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ADVENTIST HEALTH CALIFORNIA MEDICAL GROUP, INC.
Family Medicine
913 WASHINGTON ST
CALISTOGA, CA 94515
Napa County (707) 942-6233
DANIEL MARTIN HAYCRAFT M.D.
Psychiatry & Neurology (Psychiatry)
913 WASHINGTON ST
CALISTOGA, CA 94515
Napa County (707) 942-0844
ADVENTIST HEALTH PHYSICIANS NETWORK
Family Medicine
913 WASHINGTON ST
CALISTOGA, CA 94515
Napa County (707) 942-0844
DR. ANDREW G ALEXANDER MD
Family Medicine
913 WASHINGTON ST
CALISTOGA, CA 94515
Napa County (707) 942-6233
ADVENTIST HEALTH PHYSICIANS NETWORK
Family Medicine
913 WASHINGTON ST
CALISTOGA, CA 94515
Napa County (707) 942-6233
DR. KIRAN MADHAV UBHAYAKAR M.D.
Internal Medicine (Critical Care Medicine)
913 WASHINGTON ST
CALISTOGA, CA 94515
Napa County (707) 942-6233

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Charles Hudson's NPI number?

The NPI number for Charles Hudson is 1679549281. It was assigned to this individual provider in the NPPES registry on February 23, 2006.

Where is Charles Hudson located?

Charles Hudson practices at 913 Washington St, Calistoga, CA 94515. The listed phone number is (707) 942-0844.

What is Charles Hudson's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Charles Hudson enrolled in Medicare?

Yes. Charles Hudson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Charles Hudson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Charles Hudson reassigns Medicare benefits to 3 organizations: Adventist Health Clearlake Hospital Inc. (Clearlake, CA), Ukiah Adventist Hospital (Ukiah, CA) and Willits Hospital Inc. (Willits, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Charles Hudson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Charles Hudson was last updated on February 14, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.