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JOSEPH H WILLIAMS JR. M.D.
NPI 1235159583
Psychiatry & Neurology - Psychiatry in Danbury, CT

Active since July 20, 2006PECOS EnrolledAccepts Medicare Assignment
72 NORTH ST STE 103, DANBURY, CT 06810(203) 748-1200(203) 790-0010 Get Directions Write a Review

NPPES record last updated: January 10, 2018. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Joseph H Williams Jr. M.d. NPPES

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

JOSEPH H WILLIAMS JR. M.D. (NPI 1235159583) is an individual psychiatry provider in Danbury, Connecticut, licensed in Connecticut (039098) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1996).

NPPES Registry Identity

NPI1235159583
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameJOSEPH H WILLIAMS JR.Credential: M.D.
Location Address72 NORTH ST STE 103Danbury, CT 06810-5653
Mailing Address72 North St Ste 103Danbury, CT 06810-5653 · (203) 748-1200 · Fax (203) 790-0010
Phone(203) 748-1200
Fax(203) 790-0010
Sole ProprietorYes
Medical School CMSOtherGraduated 1996
Enumeration DateJuly 20, 2006
Last NPPES UpdateJanuary 10, 2018
✔ NPI 1235159583 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 CT · 039098
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.
72 NORTH ST STE 103, Danbury, CT 06810
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

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

Joseph H Williams Jr. M.d. 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 ID547445306
PECOS Enrollment IDI20110421000506
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 Reassignment

Medicare enrollment records show Joseph Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Prospect Waterbury, Inc.
23 mi
General Acute Care Hospital
64 ROBBINS ST
Waterbury, CT 06708
  • Reassigned Medicare billing, Connecticut enrollment
  • 60 clinicians in this Medicare group
NPI 1477902641 (203) 573-7280

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 5

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.

Psychotherapy with evaluation and management visit, 30 minutes 90833
Psychotherapy with evaluation and management is a 30-minute session where a mental health professional talks with you about your concerns and feelings. They assess your mental health, provide support, and manage your treatment plan to help improve your well-being.
316 services79 patients
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.
291 services79 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
77 services33 patients
Psychotherapy with evaluation and management visit, 45 minutes 90836
Psychotherapy with evaluation and management is a 45-minute session where a healthcare provider discusses your mental and emotional health. They assess your current state, manage any issues, and help you develop coping strategies. This service aims to improve your overall well-being.
52 services12 patients
Psychiatric diagnostic evaluation with medical services 90792
A psychiatric diagnostic evaluation with medical services is a comprehensive assessment. It includes a detailed examination of your mental health and physical wellbeing, as well as your personal and family history. This evaluation aids in creating an effective treatment plan.
25 services25 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06810 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
$183.10 typical visit price
range $60.82 – $183.10
Typical copayment $45.77 (range $15.20 – $45.77)
Most-billed visit code 99205
Established Patient
$75.55 typical visit price
range $19.76 – $149.26
Typical copayment $18.88 (range $4.94 – $37.31)
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 7

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

JANET G CUNNINGHAM
Counselor (Professional)
72 NORTH ST STE 103
DANBURY, CT 06810
Western Connecticut Planning Region (203) 464-3337
LINDSAY ELIZABETH MACRI
Nurse Practitioner (Family)
72 NORTH ST STE 103
DANBURY, CT 06810
Western Connecticut Planning Region (203) 748-1001
KAREN MARIE MULLANEY NP
Nurse Practitioner (Psychiatric/Mental Health)
72 NORTH ST STE 103
DANBURY, CT 06810
Western Connecticut Planning Region (203) 748-1200
ERICA SOTO LCSW
Social Worker (Clinical)
72 NORTH ST STE 103
DANBURY, CT 06810
Western Connecticut Planning Region (203) 456-3624
JANET CUNNINGHAM LPC
Counselor (Professional)
72 NORTH ST STE 103
DANBURY, CT 06810
Western Connecticut Planning Region (209) 792-0400
TRACEY DIANE DOLAN LCSW
Social Worker (Clinical)
72 NORTH ST STE 103
DANBURY, CT 06810
Western Connecticut Planning Region (203) 300-6553
ZAHIDA SAIRITUPA APRN-BC
Nurse Practitioner (Psychiatric/Mental Health)
72 NORTH ST STE 103
DANBURY, CT 06810
Western Connecticut Planning Region (203) 748-1200

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 Joseph Williams's NPI number?

The NPI number for Joseph Williams is 1235159583. It was assigned to this individual provider in the NPPES registry on July 20, 2006.

Where is Joseph Williams located?

Joseph Williams practices at 72 North St Ste 103, Danbury, CT 06810. The listed phone number is (203) 748-1200.

What is Joseph Williams's specialty?

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

Is Joseph Williams enrolled in Medicare?

Yes. Joseph Williams 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 organization bills Medicare for Joseph Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Williams reassigns Medicare benefits to Prospect Waterbury, Inc. (Waterbury, CT). The 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 Joseph Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Joseph Williams accept?

Health plans from Anthem Blue Cross and Blue Shield list Joseph Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Joseph Williams was last updated on January 10, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.