NPI registry status
Active
2026 NPPES data Psychologist NPI 1679500896 PH.D
Verify on CMS → Nancy Shaffer, PH.D
Psychologist in Washington, District of Columbia.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 47,555 in Psychologist, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
What the federal data shows
Nancy Shaffer, PH.D is a Psychologist in Washington, District of Columbia, listed in the federal CMS National Provider Identifier registry.
- #26
- Psychologist rank among District of Columbia specialties
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
CMS NPPES provider registry desk
NPI 1679500896 · Psychologist
NPI-10 · ENUM-LEGACY · TAX-MID · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1679500896
- ENUM-LEGACY 2006
- TAX-MID 48K Psychologist
- RX-NONE No Part D
- BOOK-THIN 333 in District of Columbia
- PHOTO-ENUM Ivonne Calderon · 2006
What does the federal data show about Nancy Shaffer, PH.D?
Quality data not reportedPrimary specialty
Psychologist
Specialty distribution in District of Columbia
How Psychologist compares to other specialties among District of Columbia providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Psychologist. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1679500896 |
|---|---|
| Specialty | Psychologist |
| Credentials | PH.D |
| Gender | Female |
| NPI Issued | 06/26/2006 |
Hospital and facility affiliations
Facilities where Nancy Shaffer, PH.D bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Providence Health Services Inc
Washington, DC
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Psychologist Overview
How Nancy Shaffer, PH.D fits within the Psychologist landscape nationally.
47,555
Psychologist Providers in US
56
States with Psychologist
760
Avg Claims per Provider
Nationwide Psychologist peers with similar MIPS or enrollment year
Two federal-record peer sets for Shaffer, both outside District of Columbia so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Psychologist Providers in District of Columbia
Other clinicians with the same primary specialty enrolled in District of Columbia, drawn from the same CMS NPPES roster as Shaffer.
One of 333 Psychologist providers enrolled in District of Columbia, 5 are shown here.
Dr. Alisa Ades
PHD
Washington, DC
Dr. Tanya Agarwal
LPA
Washington, DC
Dr. Ameena Ahmed
PSYD
Washington, DC
Yulia Aleshina
Washington, DC
Dr. Beth Altman
MSW LICSW
Washington, DC
Compare Psychologist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Nancy Shaffer, PH.D's specialty? ▼
Nancy Shaffer, PH.D specializes in Psychologist and practices in Washington, District of Columbia. Credentials: PH.D.
Where is Nancy Shaffer, PH.D located? ▼
Nancy Shaffer, PH.D is located at 1150 VARNUM ST NE, Washington, DC, 20017. Phone: (202) 269-7680.
What is Nancy Shaffer, PH.D's NPI number? ▼
Nancy Shaffer, PH.D's National Provider Identifier (NPI) is 1679500896, issued on 06/26/2006.
How many Psychologist providers are there in the US? ▼
There are 47,555 Psychologist providers across 56 states in the US. The average Psychologist provider writes 760 Medicare Part D claims per year.
Does Nancy Shaffer, PH.D accept Medicare? ▼
Nancy Shaffer, PH.D appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Nancy Shaffer, PH.D's credentials? ▼
Nancy Shaffer, PH.D's NPI is 1679500896 with credentials PH.D. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.