Dr. Hyacinth L. Williamson, MD
- Medicare services, 2017
- 49
- Part D claims, 2024
- 597
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 2581 Atlantic Ave, Brooklyn, NY 11207
- Practice phone
- Call (718) 495-6700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
CHN East New York Health Hub
FQHC - Main Site · Brooklyn, New York
Find Dr. Williamson's professional email, personal email and mobile number
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Dr. Hyacinth L. Williamson is a psychiatrist in New York, New York
Dr. Williamson practices at CHN East New York Health Hub in Brooklyn, New York.
Dr. Williamson's NPI, 1104954239, was assigned on March 1, 2007. Dr. Williamson holds New York license 177878.
- NPI
- 1104954239NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537342050
- NPI enumeration date
- March 1, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (718) 495-6700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 80
- Medical school graduation
- 1972
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Hyacinth L. Williamson practices in Brooklyn and New York
Dr. Williamson's primary practice is CHN East New York Health Hub, at 2581 Atlantic Ave, Brooklyn, NY 11207. The practice phone is (718) 495-6700. The NPI Registry lists Dr. Williamson's practice address as 525 E 68th St, New York, NY 10065.
- CHN East New York Health HubPrimary2581 Atlantic Ave, Brooklyn, NY 11207Phone(718) 495-6700
- NPI Registry address525 E 68th St, New York, NY 10065 · New York CountyPhone(718) 495-6700
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Hyacinth L. Williamson is affiliated with 1 site of care and 1 medical group
Dr. Williamson's primary practice is CHN East New York Health Hub in Brooklyn, New York. The medical group on file is Interborough Developmental & Consultation Center.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Hyacinth L. Williamson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williamson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| CHN East New York Health Hub | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Hyacinth L. Williamson is one of 4,448 psychiatrists in New York
Psychiatry is Dr. Williamson's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Williamson is licensed in New York.
Specialties and state licenses
- Psychiatry, New YorkPrimary
Psychiatrists near Dr. Williamson
Counts of psychiatrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Hyacinth L. Williamson billed Medicare for 49 services in 2017
CMS data shows 49 Medicare services from Dr. Williamson across 1 procedure code in 2017, all of them office visits. Medicare paid $2,664 for them. Every service was in an office.
Dr. Williamson's Medicare services by type, 2016 to 2017
- 2016
- 2017
- Office and hospital visits
- 2016: 432017: 4914%
Dr. Williamson compared with the New York median for psychiatrists, 2017
- Dr. Williamson
- New York median
- Medicare services
- 49vs 14265% below
- Part D claims
- 556vs 1244.5 times
Medians across 5,024 psychiatrists in New York with Dmand AI profiles that report each measure.
Dr. Williamson's most billed Medicare procedure codes, 2017
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Hyacinth L. Williamson's patients have a median age of 23
Across all payers, Dmand AI patient panel data puts Dr. Williamson's median patient age at 23, with 100% women.
Dr. Williamson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 23
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Hyacinth L. Williamson wrote 597 Medicare Part D claims in 2024
In 2024, Dr. Williamson wrote 597 Medicare Part D claims for 29 patients. 98% of them were for generic drugs. CMS names the drug for 556 of them, across 21 drugs with 11 or more claims each, at $4,333 in total drug cost. In 2023, CMS named 603 claims across 23 drugs.
Dr. Williamson's Part D claims by kind of drug, 2024
- Generic583 claims98%
- Brand-name14 claims2%
Dr. Williamson's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Williamson's Part D claims, 2024
- Antipsychotics, patients 65 and over6%38 of 597 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6032024: 5568%
Drugs named by CMS: 21 in 2024, 23 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Hyacinth L. Williamson offers telehealth to Medicare patients
Dr. Williamson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Williamson as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sources for Dr. Hyacinth L. Williamson's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Hyacinth L. Williamson
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What is Dr. Hyacinth L. Williamson's NPI number?
Dr. Hyacinth L. Williamson's NPI number is 1104954239. It was assigned on March 1, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Hyacinth L. Williamson?
Dr. Hyacinth L. Williamson is a psychiatrist in New York, New York. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Hyacinth L. Williamson practice?
Dr. Williamson practices at 2581 Atlantic Ave, Brooklyn, NY 11207. Dr. Williamson also practices at 525 E 68th St, New York, NY 10065. Dr. Williamson's primary practice is CHN East New York Health Hub in Brooklyn, New York.
What is Dr. Hyacinth L. Williamson's office phone number?
The practice phone on file for Dr. Williamson is (718) 495-6700.
What is Dr. Hyacinth L. Williamson's medical license number?
Dr. Williamson holds New York license 177878.
What medical group is Dr. Hyacinth L. Williamson part of?
Dr. Williamson is linked to Interborough Developmental & Consultation Center.
Does Dr. Hyacinth L. Williamson accept Medicare?
Yes. CMS data shows Dr. Williamson billed Medicare for 49 services in 2017, and Dr. Williamson accepts Medicare assignment.
Does Dr. Hyacinth L. Williamson offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Williamson as offering telehealth services.
What services does Dr. Hyacinth L. Williamson bill to Medicare?
In 2017, Dr. Williamson's most billed Medicare services were office visit, established patient (99213).
What drugs does Dr. Hyacinth L. Williamson prescribe most?
In 2024 Medicare Part D data, Dr. Williamson's most prescribed drugs by claims were Mirtazapine, Sertraline HCl and Trazodone HCl.
How long has Dr. Hyacinth L. Williamson been practicing?
Dr. Williamson graduated from medical school in 1972, 54 years ago.
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