2026 NPPES data Psychiatry Physician NPI 1659412245 M.D.
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JEFFREY CHAMBERS, M.D.

Psychiatry Physician in DURHAM, North Carolina. 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.
Prescribing volume
1K
Medicare Part D claims · 84 beneficiaries · Psychiatry Physician avg: 1K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$715.95
57 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: JEFFREY CHAMBERS, M.D. is a Psychiatry Physician ([object Object]) practicing in DURHAM, North Carolina with a Medicare Part D prescribing footprint of 1K claims across 84 beneficiaries — 9% brand-name prescribing . Industry payments of $715.95 across 57 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: JEFFREY CHAMBERS, M.D. filed 1,297 Medicare Part D claims in 2023 across DURHAM, North Carolina. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

JEFFREY CHAMBERS, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

JEFFREY CHAMBERS, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 02/08/2007

NPI 1659412245

Primary specialty

Psychiatry Physician

High-volume

53,104 US NPIs in this specialty

Medicare Part D claims

1,297 25% vs specialty avg

2023 prescription claims

Specialty avg: 1,038

Specialty distribution in North Carolina

How Psychiatry Physician compares to other specialties among North Carolina providers

North Carolina providers

Psychiatry Physician share within North Carolina

1. Psychiatry Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Psychiatry Physician share within North Carolina

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Psychiatry Physician) — 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).

JEFFREY CHAMBERS, M.D. is a Psychiatry Physician provider practicing in DURHAM, North Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1659412245. 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.

JEFFREY CHAMBERS, M.D. appears in the CMS NPPES registry as a Psychiatry Physician provider holding M.D. credentials at 4905 HARWOOD CT, DURHAM, NC, 27713, with a listed phone of (919) 452-2917. NPI 1659412245 was issued on 02/08/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHAMBERS 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 records for calendar year 2023 show 1,297 prescription claims written by this provider, covering 84 Medicare beneficiaries and totaling roughly $271K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 0.8%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Psychiatry Physician is a high-volume specialty nationwide, with 53,104 enrolled providers across 56 states and an average of 1,038 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

4905 HARWOOD CT
DURHAM, NC 27713

Provider Details

NPI 1659412245
Specialty Psychiatry Physician
Credentials M.D.
Gender Male
NPI Issued 02/08/2007

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for JEFFREY CHAMBERS, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$716

Largest payer

Teva Pharmaceuticals USA, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Generic-heavy

JEFFREY CHAMBERS, M.D. — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 1,297 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,297
Total Claims
$271K
Total Drug Cost
84
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,029
Total Day Supply
58,250
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$228K
Generic Drug Cost
$42K
Opioid Claims
11 (0.8% rate)

Patient Demographics

Average Patient Age
63.8 years
Avg HCC Risk Score
1.10
Gender Split
74% female / 26% male
Age Distribution
<65: 31, 65-74: 36, 75-84: 17, 85+: 0

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Clonazepam
150
Alprazolam
108
Dextroamphetamine-Amphetamine
Dextroamphetamine/Amphetamine
62
Quetiapine Fumarate
55
Sertraline Hcl
54
Duloxetine Hcl
44
Escitalopram Oxalate
41
Trazodone Hcl
41
Lamotrigine
38
Spravato
Esketamine Hcl
36

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Psychiatry Physician Overview

How JEFFREY CHAMBERS, M.D. fits within the Psychiatry Physician landscape nationally.

53,104
Psychiatry Physician Providers in US
56
States with Psychiatry Physician
1,038
Avg Claims per Provider

JEFFREY CHAMBERS, M.D.'s 1,297 claims are above the specialty average of 1,038.

Nearby Psychiatry Physician Providers in North Carolina

Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as CHAMBERS.

Compare Psychiatry Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JEFFREY CHAMBERS, M.D.'s specialty?
JEFFREY CHAMBERS, M.D. specializes in Psychiatry Physician and practices in DURHAM, North Carolina. Credentials: M.D..
How much does JEFFREY CHAMBERS, M.D. prescribe under Medicare Part D?
In 2023, JEFFREY CHAMBERS, M.D. wrote 1,297 Medicare Part D claims totaling $271K in drug costs for 84 beneficiaries.
Where is JEFFREY CHAMBERS, M.D. located?
JEFFREY CHAMBERS, M.D. is located at 4905 HARWOOD CT, DURHAM, NC, 27713. Phone: (919) 452-2917.
What is JEFFREY CHAMBERS, M.D.'s NPI number?
JEFFREY CHAMBERS, M.D.'s National Provider Identifier (NPI) is 1659412245, issued on 02/08/2007.
Does JEFFREY CHAMBERS, M.D. prescribe more brand-name or generic drugs?
JEFFREY CHAMBERS, M.D.'s prescribing is 9% brand-name and 91% generic drugs by claim count, with $228K in brand drug costs.
Does JEFFREY CHAMBERS, M.D. prescribe opioids?
Yes, JEFFREY CHAMBERS, M.D. had 11 opioid claims in 2023 with an opioid prescribing rate of 0.8%.
How many Psychiatry Physician providers are there in the US?
There are 53,104 Psychiatry Physician providers across 56 states in the US. The average Psychiatry Physician provider writes 1,038 Medicare Part D claims per year.
What drugs does JEFFREY CHAMBERS, M.D. prescribe most often?
Based on 2023 Medicare Part D data, JEFFREY CHAMBERS, M.D.'s most frequently prescribed drugs include Clonazepam, Alprazolam, Dextroamphetamine-Amphetamine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JEFFREY CHAMBERS, M.D. accept Medicare?
JEFFREY CHAMBERS, M.D. appears in CMS Medicare data with 1,297 Part D claims and 84 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JEFFREY CHAMBERS, M.D.'s credentials?
JEFFREY CHAMBERS, M.D.'s NPI is 1659412245 with credentials M.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

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.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
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