Dr. Katherine Niedt, MD
- Part D claims, 2024
- 60
- Industry payments
- $139
- Affiliated sites
- 1
- Medical groups
- 2
- State license
- 1
- Practice address
- 8235 Santa Monica Blvd, West Hollywood, CA 90046
- Practice phone
- Call (310) 892-4284
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Happier Living
West Hollywood, California
Find Dr. Niedt's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Katherine Niedt is a psychiatrist in West Hollywood, California
Dr. Niedt practices at Happier Living in West Hollywood, California.
Dr. Niedt's NPI, 1639666043, was assigned on April 20, 2018. Dr. Niedt graduated from St. George's University School of Medicine in 2018. Dr. Niedt holds New Jersey license 25MA11811500.
- NPI
- 1639666043NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4284097338
- NPI enumeration date
- April 20, 2018
- NPI status
- Active
- Practice phone
- (310) 892-4284
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Katherine Niedt practices at Happier Living in West Hollywood, California
Dr. Niedt's primary practice is Happier Living, at 8235 Santa Monica Blvd, West Hollywood, CA 90046 in Los Angeles County. The practice phone is (310) 892-4284.
- Happier Living8235 Santa Monica Blvd, West Hollywood, CA 90046 · Los Angeles CountyPhone(310) 892-4284
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Katherine Niedt is affiliated with 2 sites of care and 2 medical groups
Dr. Niedt's primary practice is Happier Living in West Hollywood, California. The medical group on file is Interborough Developmental & Consultation Center. Dmand AI also links Dr. Niedt to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Katherine Niedt's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Niedt practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Happier Living | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Katherine Niedt is one of 6,803 psychiatrists in California
Psychiatry is Dr. Niedt's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Niedt is licensed in New Jersey.
Specialties and state licenses
- Psychiatry, New JerseyPrimary
Psychiatrists near Dr. Niedt
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. Katherine Niedt's patients have a median age of 35
Across all payers, Dmand AI patient panel data puts Dr. Niedt's median patient age at 35, with 80% women.
Dr. Niedt's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 35
Patient panel by sex, all payers
- Women80%
- Men20%
Source: Dmand AI Patient Panel Data
Dr. Katherine Niedt wrote 60 Medicare Part D claims in 2024
In 2024, Dr. Niedt wrote 60 Medicare Part D claims for 17 patients. 78% of them were for generic drugs. They cover 10 drugs, with $1,897 in total drug cost. In 2020, CMS named 70 claims across 5 drugs.
Dr. Niedt's Part D claims by kind of drug, 2024
- Generic47 claims78%
- Brand-name13 claims22%
Dr. Niedt's most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 702021: 162131%
Drugs named by CMS: 10 in 2021, 5 in 2020.
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
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Dr. Katherine Niedt received $139 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Niedt from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $139.
Companies that paid Dr. Niedt the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Katherine Niedt graduated from St. George's University School of Medicine
Dr. Niedt graduated from St. George's University School of Medicine in 2018.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Katherine Niedt'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Katherine Niedt
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What is Dr. Katherine Niedt's NPI number?
Dr. Katherine Niedt's NPI number is 1639666043. It was assigned on April 20, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Katherine Niedt?
Dr. Katherine Niedt is a psychiatrist in West Hollywood, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Katherine Niedt practice?
Dr. Niedt practices at 8235 Santa Monica Blvd, West Hollywood, CA 90046. Dr. Niedt's primary practice is Happier Living in West Hollywood, California. Dmand AI also links Dr. Niedt to 1 group practice or clinic and 1 medical group.
What is Dr. Katherine Niedt's office phone number?
The practice phone on file for Dr. Niedt is (310) 892-4284.
What is Dr. Katherine Niedt's medical license number?
Dr. Niedt holds New Jersey license 25MA11811500.
What medical group is Dr. Katherine Niedt part of?
Dr. Niedt is linked to Interborough Developmental & Consultation Center. Dmand AI links Dr. Niedt to 1 more medical group.
Where did Dr. Katherine Niedt go to medical school?
Dr. Niedt graduated from St. George's University School of Medicine in 2018.
What drugs does Dr. Katherine Niedt prescribe most?
In 2021 Medicare Part D data, Dr. Niedt's most prescribed drugs by claims were Quetiapine Fumarate, Trazodone HCl and Lamotrigine.
Has Dr. Katherine Niedt received payments from drug or device companies?
CMS Open Payments shows $139 in general payments to Dr. Niedt from 1 company from 2023 to 2023. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Katherine Niedt been practicing?
Dr. Niedt graduated from medical school in 2018, 8 years ago.
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