2026 NPPES data Child & Adolescent Psychiatry Physician NPI 1457557167 MD
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ARIEL ISMAEL, MD

Child & Adolescent Psychiatry Physician in TAMUNING, Guam. 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
384
Medicare Part D claims · 30 beneficiaries · Child & Adolescent Psychiatry Physician avg: 600
What the federal data reveals: ARIEL ISMAEL, MD is a Child & Adolescent Psychiatry Physician ([object Object]) practicing in TAMUNING, Guam with a Medicare Part D prescribing footprint of 384 claims across 30 beneficiaries .

What stands out: ARIEL ISMAEL, MD filed 384 Medicare Part D claims in 2023 across TAMUNING, Guam. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

ARIEL ISMAEL, MD 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).

ARIEL ISMAEL, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 06/21/2007

NPI 1457557167

Primary specialty

Child & Adolescent Psychiatry Physician

Mid-sized

6,160 US NPIs in this specialty

Medicare Part D claims

384 36% vs specialty avg

2023 prescription claims

Specialty avg: 600

Specialty distribution in Guam

How Child & Adolescent Psychiatry Physician compares to other specialties among Guam providers

Guam providers

Child & Adolescent Psychiatry Physician share within Guam

1. Child & Adolescent Psychiatry Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Child & Adolescent Psychiatry Physician share within Guam

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Child & Adolescent 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).

ARIEL ISMAEL, MD is a Child & Adolescent Psychiatry Physician provider practicing in TAMUNING, Guam, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1457557167. 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.

ARIEL ISMAEL, MD appears in the CMS NPPES registry as a Child & Adolescent Psychiatry Physician provider holding MD credentials at 790 GOV CARLOS G CAMACHO RD, TAMUNING, GU, 96913, with a listed phone of (671) 647-5345. NPI 1457557167 was issued on 06/21/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ISMAEL 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 384 prescription claims written by this provider, covering 30 Medicare beneficiaries and totaling roughly $10K in drug spend. 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.

Child & Adolescent Psychiatry Physician is a mid-sized specialty nationwide, with 6,160 enrolled providers across 54 states and an average of 600 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

790 GOV CARLOS G CAMACHO RD
TAMUNING, GU 96913

Provider Details

NPI 1457557167
Specialty Child & Adolescent Psychiatry Physician
Credentials MD
Gender Male
NPI Issued 06/21/2007

Medicare Part D Prescribing Data

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

384
Total Claims
$10K
Total Drug Cost
30
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
428
Total Day Supply
12,745
Brand Drug Cost
$0
Generic Drug Cost
$10K

Patient Demographics

Average Patient Age
62.6 years
Avg HCC Risk Score
0.95
Gender Split
57% female / 43% male
Age Distribution
<65: 18, 65-74: N/A, 75-84: N/A, 85+: N/A

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
51
Quetiapine Fumarate
36
Lorazepam
33
Benztropine Mesylate
30
Carbamazepine
28
Risperidone
26
Escitalopram Oxalate
24
Haloperidol
23
Aripiprazole
19
Olanzapine
17

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

Child & Adolescent Psychiatry Physician Overview

How ARIEL ISMAEL, MD fits within the Child & Adolescent Psychiatry Physician landscape nationally.

6,160
Child & Adolescent Psychiatry Physician Providers in US
54
States with Child & Adolescent Psychiatry Physician
600
Avg Claims per Provider

ARIEL ISMAEL, MD's 384 claims are below the specialty average of 600.

Nearby Child & Adolescent Psychiatry Physician Providers in Guam

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

Compare Child & Adolescent Psychiatry Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ARIEL ISMAEL, MD's specialty?
ARIEL ISMAEL, MD specializes in Child & Adolescent Psychiatry Physician and practices in TAMUNING, Guam. Credentials: MD.
How much does ARIEL ISMAEL, MD prescribe under Medicare Part D?
In 2023, ARIEL ISMAEL, MD wrote 384 Medicare Part D claims totaling $10K in drug costs for 30 beneficiaries.
Where is ARIEL ISMAEL, MD located?
ARIEL ISMAEL, MD is located at 790 GOV CARLOS G CAMACHO RD, TAMUNING, GU, 96913. Phone: (671) 647-5345.
What is ARIEL ISMAEL, MD's NPI number?
ARIEL ISMAEL, MD's National Provider Identifier (NPI) is 1457557167, issued on 06/21/2007.
How many Child & Adolescent Psychiatry Physician providers are there in the US?
There are 6,160 Child & Adolescent Psychiatry Physician providers across 54 states in the US. The average Child & Adolescent Psychiatry Physician provider writes 600 Medicare Part D claims per year.
What drugs does ARIEL ISMAEL, MD prescribe most often?
Based on 2023 Medicare Part D data, ARIEL ISMAEL, MD's most frequently prescribed drugs include Clonazepam, Quetiapine Fumarate, Lorazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ARIEL ISMAEL, MD accept Medicare?
ARIEL ISMAEL, MD appears in CMS Medicare data with 384 Part D claims and 30 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ARIEL ISMAEL, MD's credentials?
ARIEL ISMAEL, MD's NPI is 1457557167 with credentials MD. 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