NPPES file of Aug 9, 2026

David Isaac

Psychiatric/Mental Health Nurse Practitioner · Yakima, WA

David Isaac is a psychiatric/mental health nurse practitioner with a practice address in Yakima, Washington, and NPI 1962089227, issued on Mar 24, 2021. Check the license (Washington N361155964, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1962089227
Name
David Isaac
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
N361155964 WA
Self-reported in NPPES; status is on the state search
Practice location
402 S 4TH Ave, Yakima, WA 98902
Phone
(509) 575-4084
Enumerated
Mar 24, 2021
Record last updated
Mar 24, 2021 (not updated in 5 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 402 S 4TH Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Isis Acevedo GonzalezClinical Social Worker1184216392
  2. Roger AckermanAddiction (Substance Use Disorder) Counselor1366125551
  3. Brenda Acosta, ARNP, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1871369728
  4. Paulina AlcalaCase Manager/Care Coordinator1053936203
  5. Myra AlcarazPeer Specialist1386220036
  6. Jasmine AldacoSocial Worker1194479410

Verify David Isaac in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Washington board licenses this profession
    Search for license N361155964
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Washington license search

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3.3 times the Medicare Part D claims of the average psychiatric/mental health nurse practitioner in 2024

2,983 Medicare Part D claims for 136 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D.

  1. David Isaac2,983
  2. Specialty average906

Most prescribed

  1. Trazodone Hcl171 claims
  2. Benztropine Mesylate158 claims
  3. Sertraline Hcl146 claims
  4. Quetiapine Fumarate140 claims
  5. Lorazepam111 claims
  6. Lamotrigine110 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.

David Isaac among 1,875 psychiatric/mental health nurse practitioner records in Washington

David Isaac is one of 1,875 psychiatric/mental health nurse practitioner records with a practice address in Washington. 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 2021, is newer than 64% of them.

  • NPI issued2021 · 64% of these records are older, 29% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileNo · 48% of these records are
  • Record last updated2021 · 28% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

44 psychiatric/mental health nurse practitioner records list a practice address in Yakima

They are 44 of the 3,970 NPPES records with a practice address in Yakima, and 1,875 psychiatric/mental health nurse practitioner records in Washington.

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Jodi Buffington, ARNPYakima, WA 989021023221363
  2. Christlaen Cady, NPYakima, WA 989021275776130
  3. Jennifer Davis, ARNPYakima, WA 989021255531661
  4. Karen Diana, APRNYakima, WA 989021952474108
  5. Barbara Hall, NPYakima, WA 989021831269190
  6. Melissa Helgeson, PMHNPYakima, WA 989021093364242
  7. Janet Ness, ARNPYakima, WA 989021194817700
  8. Barbara Norman, PMHNP-BCYakima, WA 989021043422611

Common questions

What is David Isaac's NPI number?

David Isaac's National Provider Identifier (NPI) is 1962089227, issued on Mar 24, 2021. An NPI identifies a provider in billing; it is not a license.

Where is David Isaac located?

The NPPES record lists a practice address at 402 S 4TH Ave, Yakima, WA, 98902. Phone: (509) 575-4084. Providers update this record themselves, so call before visiting.

How can I verify David Isaac's license?

NPPES lists Washington license number N361155964, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.

How much does David Isaac prescribe under Medicare Part D?

In 2024, David Isaac had 2,983 Medicare Part D claims for 136 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. 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.