Nutr Res
Animals, NewbornCalcium-Binding ProteinsDietary Supplements
Dr. Nastacia Karine Chavannes, MD
NPI1013440452PAC ID2567715931
- Medicare services, 2019
- 451
- Part D claims, 2024
- 31
- Publications
- 1
- Industry payments
- $346
- Affiliated sites
- 4
- 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. Chavannes' 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. Nastacia Karine Chavannes is a psychiatrist in West Hollywood, California
Dr. Chavannes practices at Happier Living in West Hollywood, California.
Dr. Chavannes' NPI, 1013440452, was assigned on April 4, 2017. Dr. Chavannes graduated from Albany Medical College of Union University in 2017. Dr. Chavannes holds New Jersey license 25MA11979300.
NPI and contact details
- NPI
- 1013440452NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2567715931
- NPI enumeration date
- April 4, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (310) 892-4284
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nastacia Karine Chavannes practices at Happier Living in West Hollywood, California
Dr. Chavannes' 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. Nastacia Karine Chavannes is affiliated with 5 sites of care and 6 medical groups
Dr. Chavannes' primary practice is Happier Living in West Hollywood, California. The medical group on file is Happier Living. Dmand AI also links Dr. Chavannes to 5 more medical groups and 4 group practices and clinics, each named with a free account.
Happier LivingPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Nastacia Karine Chavannes' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chavannes practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Happier Living | Available with a free account |
| +4 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Dr. Chavannes practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Nastacia Karine Chavannes is one of 6,803 psychiatrists in California
Psychiatry is Dr. Chavannes' primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dmand AI has Dr. Chavannes' licenses on file in 2 states: New Jersey and New York.
Specialties and state licenses
- Psychiatry, New JerseyPrimary
- New York license
Psychiatrists near Dr. Chavannes
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. Nastacia Karine Chavannes billed Medicare for 451 services in 2019
CMS data shows 451 Medicare services from Dr. Chavannes across 3 procedure codes in 2019. Medicare paid $33,485 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2019451
Paid by Medicare$33,485
Procedure codes3
Dr. Chavannes' Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 1772019: 451155%
Dr. Chavannes compared with the California median for psychiatrists, 2019
- Dr. Chavannes
- California median
- Medicare services
- 451vs 1193.8 times
- Part D claims
- 12vs 14492% below
Medians across 6,809 psychiatrists in California with Dmand AI profiles that report each measure.
Dr. Chavannes' most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Chavannes?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chavannes and other psychiatrists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nastacia Karine Chavannes' patients have a median age of 35
Across all payers, Dmand AI patient panel data puts Dr. Chavannes' median patient age at 35, with 61% women.
Dr. Chavannes' 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
- Women61%
- Men35%
Source: Dmand AI Patient Panel Data
Dr. Nastacia Karine Chavannes wrote 31 Medicare Part D claims in 2024
In 2024, Dr. Chavannes wrote 31 Medicare Part D claims. 100% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $83 in total drug cost. In 2020, CMS named 11 claims across 1 drug.
Part D claims, 202431
Drugs named by CMS1
Total drug cost$83
Dr. Chavannes' 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.
Part D claims for drugs CMS names, 2020 to 2024
- 2020
- 2024
- Claims for drugs CMS names
- 2020: 112024: 129%
Drugs named by CMS: 1 in 2024, 1 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
How Dr. Nastacia Karine Chavannes takes part in Medicare
Dr. Chavannes accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Find psychiatrists like Dr. Chavannes by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Nastacia Karine Chavannes has 1 publication on record
Dmand AI links 1 paper to Dr. Chavannes in 2015. Dr. Chavannes' most frequent co-author is Abhinav Raj Saxena, MD.
Papers1
Dr. Chavannes' most frequent co-authors
- Abhinav Raj Saxena, MD1 shared paper
Recent publications by Dr. Chavannes
See who Dr. Chavannes researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chavannes works with, so you can find a warm path to the right psychiatrists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Nastacia Karine Chavannes received $346 in industry payments from 2019 to 2023
CMS Open Payments shows 19 general payments to Dr. Chavannes from 6 drug and device companies from 2019 to 2023. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $148.
General payments to Dr. Chavannes by program year, 2019 to 2023
Companies that paid Dr. Chavannes the most, 2019 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nastacia Karine Chavannes graduated from Albany Medical College of Union University
Dr. Chavannes graduated from Albany Medical College of Union University in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nastacia Karine Chavannes'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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Nastacia Karine Chavannes
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Nastacia Karine Chavannes' NPI number?
Dr. Nastacia Karine Chavannes' NPI number is 1013440452. It was assigned on April 4, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Nastacia Karine Chavannes?
Dr. Nastacia Karine Chavannes is a psychiatrist in West Hollywood, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Nastacia Karine Chavannes practice?
Dr. Chavannes practices at 8235 Santa Monica Blvd, West Hollywood, CA 90046. Dr. Chavannes' primary practice is Happier Living in West Hollywood, California. Dmand AI also links Dr. Chavannes to 5 medical groups and 4 group practices and clinics.
What is Dr. Nastacia Karine Chavannes' office phone number?
The practice phone on file for Dr. Chavannes is (310) 892-4284.
What is Dr. Nastacia Karine Chavannes' medical license number?
Dr. Chavannes holds New Jersey license 25MA11979300, one of the licenses on file in 2 states.
Which states has Dr. Nastacia Karine Chavannes been licensed in?
Dmand AI has state licenses on file for Dr. Chavannes in New Jersey and New York.
What medical group is Dr. Nastacia Karine Chavannes part of?
Dr. Chavannes is linked to Happier Living. Dmand AI links Dr. Chavannes to 5 more medical groups.
Does Dr. Nastacia Karine Chavannes accept Medicare?
Yes. CMS data shows Dr. Chavannes billed Medicare for 451 services in 2019, and Dr. Chavannes accepts Medicare assignment.
What services does Dr. Nastacia Karine Chavannes bill to Medicare?
In 2019, Dr. Chavannes' most billed Medicare services were nursing facility care (99309), nursing facility care (99308) and nursing facility care (99306).
Where did Dr. Nastacia Karine Chavannes go to medical school?
Dr. Chavannes graduated from Albany Medical College of Union University in 2017.
Show 5 more questionsShow fewer questions
What drugs does Dr. Nastacia Karine Chavannes prescribe most?
In 2024 Medicare Part D data, Dr. Chavannes' most prescribed drugs by claims were Paroxetine HCl.
Has Dr. Nastacia Karine Chavannes received payments from drug or device companies?
CMS Open Payments shows $346 in general payments to Dr. Chavannes from 6 companies from 2019 to 2023. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Nastacia Karine Chavannes been practicing?
Dr. Chavannes graduated from medical school in 2017, 9 years ago.
Does Dr. Nastacia Karine Chavannes do research?
Dmand AI links 1 publication to Dr. Chavannes.
Who does Dr. Nastacia Karine Chavannes publish with?
Dr. Chavannes' most frequent co-authors are Abhinav Raj Saxena, MD (1 shared paper).
Selling to psychiatry practices?
See psychiatrists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card