2026 NPPES data Psychiatry Physician NPI 1922145309 M.D.
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MARIA DIANA ROBLES, M.D.

Psychiatry Physician in JAMESTOWN, North Dakota. 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
628
Medicare Part D claims · 31 beneficiaries · Psychiatry Physician avg: 1K
Generic prescribing
79%
generic claims · 21% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: MARIA DIANA ROBLES, M.D. is a Psychiatry Physician ([object Object]) practicing in JAMESTOWN, North Dakota with a Medicare Part D prescribing footprint of 628 claims across 31 beneficiaries — 21% brand-name prescribing .

What stands out: MARIA DIANA ROBLES, M.D. filed 628 Medicare Part D claims in 2023 across JAMESTOWN, North Dakota. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

MARIA DIANA ROBLES, 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).

MARIA DIANA ROBLES, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 02/01/2007

NPI 1922145309

Primary specialty

Psychiatry Physician

High-volume

53,104 US NPIs in this specialty

Medicare Part D claims

628 39% vs specialty avg

2023 prescription claims

Specialty avg: 1,038

Specialty distribution in North Dakota

How Psychiatry Physician compares to other specialties among North Dakota providers

North Dakota providers

Psychiatry Physician share within North Dakota

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

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).

MARIA DIANA ROBLES, M.D. is a Psychiatry Physician provider practicing in JAMESTOWN, North Dakota, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1922145309. 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.

MARIA DIANA ROBLES, M.D. appears in the CMS NPPES registry as a Psychiatry Physician provider holding M.D. credentials at 520 3RD ST NW, JAMESTOWN, ND, 58401, with a listed phone of (701) 253-6300. NPI 1922145309 was issued on 02/01/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ROBLES 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 628 prescription claims written by this provider, covering 31 Medicare beneficiaries and totaling roughly $266K in drug spend, split 21% brand-name and 79% generic by claim count. 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

520 3RD ST NW
JAMESTOWN, ND 58401

Provider Details

NPI 1922145309
Specialty Psychiatry Physician
Credentials M.D.
Gender Female
NPI Issued 02/01/2007

Brand vs generic prescribing mix · Typical

MARIA DIANA ROBLES, M.D. — brand share 21.0%
Specialty average (est.)

21% brand-name claims vs 79% generic, on 628 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.

628
Total Claims
$266K
Total Drug Cost
31
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
653
Total Day Supply
18,112
Brand vs Generic
21% brand / 79% generic
Brand Drug Cost
$243K
Generic Drug Cost
$23K

Patient Demographics

Average Patient Age
50.3 years
Avg HCC Risk Score
1.15
Gender Split
52% female / 48% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Lamotrigine
46
Invega Sustenna
Paliperidone Palmitate
36
Sertraline Hcl
35
Quetiapine Fumarate
34
Bupropion Xl
Bupropion Hcl
29
Clozapine
27
Olanzapine
27
Trazodone Hcl
25
Escitalopram Oxalate
24
Lorazepam
21

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

Psychiatry Physician Overview

How MARIA DIANA ROBLES, 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

MARIA DIANA ROBLES, M.D.'s 628 claims are below the specialty average of 1,038.

Nearby Psychiatry Physician Providers in North Dakota

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

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

Frequently Asked Questions

What is MARIA DIANA ROBLES, M.D.'s specialty?
MARIA DIANA ROBLES, M.D. specializes in Psychiatry Physician and practices in JAMESTOWN, North Dakota. Credentials: M.D..
How much does MARIA DIANA ROBLES, M.D. prescribe under Medicare Part D?
In 2023, MARIA DIANA ROBLES, M.D. wrote 628 Medicare Part D claims totaling $266K in drug costs for 31 beneficiaries.
Where is MARIA DIANA ROBLES, M.D. located?
MARIA DIANA ROBLES, M.D. is located at 520 3RD ST NW, JAMESTOWN, ND, 58401. Phone: (701) 253-6300.
What is MARIA DIANA ROBLES, M.D.'s NPI number?
MARIA DIANA ROBLES, M.D.'s National Provider Identifier (NPI) is 1922145309, issued on 02/01/2007.
Does MARIA DIANA ROBLES, M.D. prescribe more brand-name or generic drugs?
MARIA DIANA ROBLES, M.D.'s prescribing is 21% brand-name and 79% generic drugs by claim count, with $243K in brand drug costs.
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 MARIA DIANA ROBLES, M.D. prescribe most often?
Based on 2023 Medicare Part D data, MARIA DIANA ROBLES, M.D.'s most frequently prescribed drugs include Lamotrigine, Invega Sustenna, Sertraline Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARIA DIANA ROBLES, M.D. accept Medicare?
MARIA DIANA ROBLES, M.D. appears in CMS Medicare data with 628 Part D claims and 31 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARIA DIANA ROBLES, M.D.'s credentials?
MARIA DIANA ROBLES, M.D.'s NPI is 1922145309 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