2026 NPPES data Endodontics NPI 1336508092 DDS
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PATRICK CLARK, DDS

Endodontics in RIVER FOREST, Illinois. 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
12
Medicare Part D claims · 11 beneficiaries · Endodontics avg: 116
What the federal data reveals: PATRICK CLARK, DDS is a Endodontics ([object Object]) practicing in RIVER FOREST, Illinois with a Medicare Part D prescribing footprint of 12 claims across 11 beneficiaries .

What stands out: PATRICK CLARK, DDS filed 12 Medicare Part D claims in 2023 across RIVER FOREST, Illinois. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

PATRICK CLARK, DDS at a glance

Quality data not reported

NPI registry status

Active

Issued 02/23/2016

NPI 1336508092

Primary specialty

Endodontics

Mid-sized

5,856 US NPIs in this specialty

Medicare Part D claims

12 90% vs specialty avg

2023 prescription claims

Specialty avg: 116

Specialty distribution in Illinois

How Endodontics compares to other specialties among Illinois providers

Illinois providers

Endodontics share within Illinois

1. Endodontics42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Endodontics share within Illinois

Specialty board-certification context

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

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

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

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

PATRICK CLARK, DDS is a Endodontics provider practicing in RIVER FOREST, Illinois, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: DDS. NPI: 1336508092. 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.

PATRICK CLARK, DDS appears in the CMS NPPES registry as a Endodontics provider holding DDS credentials at 7603 NORTH AVE, RIVER FOREST, IL, 60305, with a listed phone of (708) 456-7787. NPI 1336508092 was issued on 02/23/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CLARK 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 12 prescription claims written by this provider, covering 11 Medicare beneficiaries and totaling roughly $81 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.

Endodontics is a mid-sized specialty nationwide, with 5,856 enrolled providers across 53 states and an average of 116 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

7603 NORTH AVE
RIVER FOREST, IL 60305

Provider Details

NPI 1336508092
Specialty Endodontics
Credentials DDS
Gender Male
NPI Issued 02/23/2016

License & disciplinary context — Illinois IDFPR 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 — they are NOT specific to PATRICK CLARK, DDS. To verify PATRICK CLARK, DDS's current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases

IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

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

12
Total Claims
$81
Total Drug Cost
11
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
12
Total Day Supply
71
Brand Drug Cost
$0
Generic Drug Cost
$81
Antibiotic Claims
11

Patient Demographics

Average Patient Age
72.5 years
Avg HCC Risk Score
0.63

Endodontics Overview

How PATRICK CLARK, DDS fits within the Endodontics landscape nationally.

5,856
Endodontics Providers in US
53
States with Endodontics
116
Avg Claims per Provider

PATRICK CLARK, DDS's 12 claims are below the specialty average of 116.

Nearby Endodontics Providers in Illinois

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

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

Frequently Asked Questions

What is PATRICK CLARK, DDS's specialty?
PATRICK CLARK, DDS specializes in Endodontics and practices in RIVER FOREST, Illinois. Credentials: DDS.
How much does PATRICK CLARK, DDS prescribe under Medicare Part D?
In 2023, PATRICK CLARK, DDS wrote 12 Medicare Part D claims totaling $81 in drug costs for 11 beneficiaries.
Where is PATRICK CLARK, DDS located?
PATRICK CLARK, DDS is located at 7603 NORTH AVE, RIVER FOREST, IL, 60305. Phone: (708) 456-7787.
What is PATRICK CLARK, DDS's NPI number?
PATRICK CLARK, DDS's National Provider Identifier (NPI) is 1336508092, issued on 02/23/2016.
How many Endodontics providers are there in the US?
There are 5,856 Endodontics providers across 53 states in the US. The average Endodontics provider writes 116 Medicare Part D claims per year.
Does PATRICK CLARK, DDS accept Medicare?
PATRICK CLARK, DDS appears in CMS Medicare data with 12 Part D claims and 11 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify PATRICK CLARK, DDS's credentials?
PATRICK CLARK, DDS's NPI is 1336508092 with credentials DDS. 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