2026 NPPES data Periodontics NPI 1811999618 D.D.S., M.S.
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GREGORY SHANBOUR, D.D.S., M.S.

Periodontics in OKLAHOMA CITY, Oklahoma. 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
172
Medicare Part D claims · 47 beneficiaries · Periodontics avg: 264
What the federal data reveals: GREGORY SHANBOUR, D.D.S., M.S. is a Periodontics ([object Object]) practicing in OKLAHOMA CITY, Oklahoma with a Medicare Part D prescribing footprint of 172 claims across 47 beneficiaries .

What stands out: GREGORY SHANBOUR, D.D.S., M.S. filed 172 Medicare Part D claims in 2023 across OKLAHOMA CITY, Oklahoma. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

GREGORY SHANBOUR, D.D.S., M.S. at a glance

Quality data not reported

NPI registry status

Active

Issued 08/11/2005

NPI 1811999618

Primary specialty

Periodontics

Mid-sized

6,061 US NPIs in this specialty

Medicare Part D claims

172 35% vs specialty avg

2023 prescription claims

Specialty avg: 264

Specialty distribution in Oklahoma

How Periodontics compares to other specialties among Oklahoma providers

Oklahoma providers

Periodontics share within Oklahoma

1. Periodontics42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Periodontics share within Oklahoma

Specialty board-certification context

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

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

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

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

GREGORY SHANBOUR, D.D.S., M.S. is a Periodontics provider practicing in OKLAHOMA CITY, Oklahoma, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: D.D.S., M.S.. NPI: 1811999618. 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.

GREGORY SHANBOUR, D.D.S., M.S. appears in the CMS NPPES registry as a Periodontics provider holding D.D.S., M.S. credentials at 8117 S WALKER AVE, OKLAHOMA CITY, OK, 73139, with a listed phone of (405) 634-2239. NPI 1811999618 was issued on 08/11/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SHANBOUR 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 172 prescription claims written by this provider, covering 47 Medicare beneficiaries and totaling roughly $2K in drug spend, with an opioid prescribing rate of 11.0%. 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.

Periodontics is a mid-sized specialty nationwide, with 6,061 enrolled providers across 53 states and an average of 264 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

8117 S WALKER AVE
OKLAHOMA CITY, OK 73139

Provider Details

NPI 1811999618
Specialty Periodontics
Credentials D.D.S., M.S.
Gender Male
NPI Issued 08/11/2005

Medicare Part D Prescribing Data

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

172
Total Claims
$2K
Total Drug Cost
47
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
172
Total Day Supply
1,337
Generic Drug Cost
$943
Opioid Claims
19 (11.0% rate)
Antibiotic Claims
53

Patient Demographics

Average Patient Age
72.4 years
Avg HCC Risk Score
0.75
Gender Split
57% female / 43% 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
Chlorhexidine Gluconate
35
Penicillin V Potassium
22
Alprazolam
19
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
17
Cefadroxil
15
Methylprednisolone
14
Promethazine Hcl
13

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

Periodontics Overview

How GREGORY SHANBOUR, D.D.S., M.S. fits within the Periodontics landscape nationally.

6,061
Periodontics Providers in US
53
States with Periodontics
264
Avg Claims per Provider

GREGORY SHANBOUR, D.D.S., M.S.'s 172 claims are below the specialty average of 264.

Nearby Periodontics Providers in Oklahoma

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

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

Frequently Asked Questions

What is GREGORY SHANBOUR, D.D.S., M.S.'s specialty?
GREGORY SHANBOUR, D.D.S., M.S. specializes in Periodontics and practices in OKLAHOMA CITY, Oklahoma. Credentials: D.D.S., M.S..
How much does GREGORY SHANBOUR, D.D.S., M.S. prescribe under Medicare Part D?
In 2023, GREGORY SHANBOUR, D.D.S., M.S. wrote 172 Medicare Part D claims totaling $2K in drug costs for 47 beneficiaries.
Where is GREGORY SHANBOUR, D.D.S., M.S. located?
GREGORY SHANBOUR, D.D.S., M.S. is located at 8117 S WALKER AVE, OKLAHOMA CITY, OK, 73139. Phone: (405) 634-2239.
What is GREGORY SHANBOUR, D.D.S., M.S.'s NPI number?
GREGORY SHANBOUR, D.D.S., M.S.'s National Provider Identifier (NPI) is 1811999618, issued on 08/11/2005.
Does GREGORY SHANBOUR, D.D.S., M.S. prescribe opioids?
Yes, GREGORY SHANBOUR, D.D.S., M.S. had 19 opioid claims in 2023 with an opioid prescribing rate of 11.0%.
How many Periodontics providers are there in the US?
There are 6,061 Periodontics providers across 53 states in the US. The average Periodontics provider writes 264 Medicare Part D claims per year.
What drugs does GREGORY SHANBOUR, D.D.S., M.S. prescribe most often?
Based on 2023 Medicare Part D data, GREGORY SHANBOUR, D.D.S., M.S.'s most frequently prescribed drugs include Chlorhexidine Gluconate, Penicillin V Potassium, Alprazolam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GREGORY SHANBOUR, D.D.S., M.S. accept Medicare?
GREGORY SHANBOUR, D.D.S., M.S. appears in CMS Medicare data with 172 Part D claims and 47 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GREGORY SHANBOUR, D.D.S., M.S.'s credentials?
GREGORY SHANBOUR, D.D.S., M.S.'s NPI is 1811999618 with credentials D.D.S., M.S.. 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