Ruth Annette Schack, M.D.
Psychiatry Physician · Newport Beach, CA
Ruth Annette Schack, M.D. is a psychiatry physician with a practice address in Newport Beach, California, and NPI 1962544551, issued on Feb 12, 2007. Check the license (California G73053, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ruth Annette Schack
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- G73053 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 Newport Center Dr, Newport Beach, CA 92660
- Phone
- (949) 640-4033
- Enumerated
- Feb 12, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (949) 721-9572
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 400 Newport Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ruth Annette Schack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G73053Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average psychiatry physician in 2024
730 Medicare Part D claims for 23 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.
Most prescribed
- Alprazolam100 claims
- Gabapentin48 claims
- Clonazepam45 claims
- Trazodone Hcl43 claims
- Bupropion Xl41 claims
- Fluoxetine Hcl31 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Ruth Annette Schack among 8,673 psychiatry physician records in California
Ruth Annette Schack, M.D. is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 33% of them.
- NPI issued2007 · 33% of these records are older, 48% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2007 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
59 psychiatry physician records list a practice address in Newport Beach
They are 59 of the 4,414 NPPES records with a practice address in Newport Beach, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Newport Beach → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Jonathan Bellman, M.D.Newport Beach, CA 926601285716696
- Barton Blinder, M.D.Newport Beach, CA 926601598790487
- Gianfranco Burdi, M.D.Newport Beach, CA 926601801812326
- Don De Francisco, M.D.Newport Beach, CA 926601992885859
- Raafat Girgis, M.D.Newport Beach, CA 926601225080013
- Lesley Macarthur, M.D.Newport Beach, CA 926601073604054
- Andrei Novac, M.D.Newport Beach, CA 926601992818348
- Nader Oskooilar, MDNewport Beach, CA 926601336144872
Common questions
What is Ruth Annette Schack, M.D.'s NPI number?
Ruth Annette Schack, M.D.'s National Provider Identifier (NPI) is 1962544551, issued on Feb 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ruth Annette Schack, M.D. located?
The NPPES record lists a practice address at 400 Newport Center Dr, Newport Beach, CA, 92660. Phone: (949) 640-4033. Providers update this record themselves, so call before visiting.
How can I verify Ruth Annette Schack, M.D.'s license?
NPPES lists California license number G73053, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ruth Annette Schack, M.D. prescribe under Medicare Part D?
In 2024, Ruth Annette Schack, M.D. had 730 Medicare Part D claims for 23 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.