2026 NPPES data Psychologist NPI 1639683188 PHD
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THOMAS ADAMS, PHD

Psychologist in NEW HAVEN, Connecticut. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
What the federal data reveals: THOMAS ADAMS, PHD is a Psychologist ([object Object]) practicing in NEW HAVEN, Connecticut .

What stands out: THOMAS ADAMS, PHD specializes in Psychologist and practices in NEW HAVEN, Connecticut, listed in the federal CMS National Provider Identifier registry. Every detail on this page comes straight from federal CMS records, with no proprietary rating applied.

THOMAS ADAMS, PHD at a glance

Quality data not reported

NPI registry status

Active

Issued 11/20/2017

NPI 1639683188

Primary specialty

Psychologist

Mid-sized

47,503 US NPIs in this specialty

Specialty distribution in Connecticut

How Psychologist compares to other specialties among Connecticut providers

Connecticut providers

Psychologist share within Connecticut

1. Psychologist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Psychologist share within Connecticut

Specialty board-certification context

Estimated specialty board-certified rate — Psychologist (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Psychologist ABMS/AOA estimate

Est. board-certified rate (Psychologist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Psychologist) — ABMS / AOA estimate

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).

THOMAS ADAMS, PHD is a Psychologist provider practicing in NEW HAVEN, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PHD. NPI: 1639683188. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

THOMAS ADAMS, PHD appears in the CMS NPPES registry as a Psychologist provider holding PHD credentials at 34 PARK ST OFC W309, NEW HAVEN, CT, 06519, with a listed phone of (203) 974-7496. NPI 1639683188 was issued on 11/20/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ADAMS most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal — many Psychologist providers operate outside Part D entirely.

Psychologist is a mid-sized specialty nationwide, with 47,503 enrolled providers across 56 states and an average of 760 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

34 PARK ST OFC W309
NEW HAVEN, CT 06519

Provider Details

NPI 1639683188
Specialty Psychologist
Credentials PHD
Gender Male
NPI Issued 11/20/2017

Psychologist Overview

How THOMAS ADAMS, PHD fits within the Psychologist landscape nationally.

47,503
Psychologist Providers in US
56
States with Psychologist
760
Avg Claims per Provider

Nearby Psychologist Providers in Connecticut

Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as ADAMS.

Compare Psychologist nationally: see state-by-state distribution →

Frequently Asked Questions

What is THOMAS ADAMS, PHD's specialty?
THOMAS ADAMS, PHD specializes in Psychologist and practices in NEW HAVEN, Connecticut. Credentials: PHD.
Where is THOMAS ADAMS, PHD located?
THOMAS ADAMS, PHD is located at 34 PARK ST OFC W309, NEW HAVEN, CT, 06519. Phone: (203) 974-7496.
What is THOMAS ADAMS, PHD's NPI number?
THOMAS ADAMS, PHD's National Provider Identifier (NPI) is 1639683188, issued on 11/20/2017.
How many Psychologist providers are there in the US?
There are 47,503 Psychologist providers across 56 states in the US. The average Psychologist provider writes 760 Medicare Part D claims per year.
Does THOMAS ADAMS, PHD accept Medicare?
THOMAS ADAMS, PHD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify THOMAS ADAMS, PHD's credentials?
THOMAS ADAMS, PHD's NPI is 1639683188 with credentials PHD. 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

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