2026 NPPES data Sleep Medicine (Internal Medicine) Physician NPI 1093701658 M.D.
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ROBERT GORDON, M.D.

Sleep Medicine (Internal Medicine) Physician 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
824
Medicare Part D claims · 97 beneficiaries · Sleep Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
74%
generic claims · 26% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ROBERT GORDON, M.D. filed 824 Medicare Part D claims in 2023 as a Sleep Medicine (Internal Medicine) Physician in OKLAHOMA CITY, Oklahoma, prescribing 74% generic.

824
Part D claims, 2023
74%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

ROBERT GORDON, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

824 Top 27% higher than 73% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). This entry sits in this band. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

ROBERT GORDON, 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).

What does the federal data show about ROBERT GORDON, M.D.?

Quality data not reported

NPI registry status

Active

Issued 09/20/2005

NPI 1093701658

Primary specialty

Sleep Medicine (Internal Medicine) Physician

Niche

857 US NPIs in this specialty

Medicare Part D claims

824 37% vs specialty avg

2023 prescription claims

Specialty avg: 1,310

Specialty distribution in Oklahoma

How Sleep Medicine (Internal Medicine) Physician compares to other specialties among Oklahoma providers

Oklahoma providers

Sleep Medicine (Internal Medicine) Physician share within Oklahoma

1. Sleep Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Sleep Medicine (Internal Medicine) Physician share within Oklahoma

Specialty board-certification context

Estimated specialty board-certified rate — Sleep Medicine (Internal Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Sleep Medicine (Internal Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Sleep Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Sleep Medicine (Internal Medicine) 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).

ROBERT GORDON, M.D. appears in the CMS NPPES registry as a Sleep Medicine (Internal Medicine) Physician provider holding M.D. credentials at 4200 W MEMORIAL RD, OKLAHOMA CITY, OK, 73120, with a listed phone of (405) 286-5946. NPI 1093701658 was issued on 09/20/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GORDON 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 824 prescription claims written by this provider, covering 97 Medicare beneficiaries and totaling roughly $139K in drug spend, split 26% brand-name and 74% generic by claim count, with an opioid prescribing rate of 3.6%. 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.

Sleep Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 857 enrolled providers across 52 states and an average of 1,310 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

4200 W MEMORIAL RD
OKLAHOMA CITY, OK 73120

Provider Details

NPI 1093701658
Specialty Sleep Medicine (Internal Medicine) Physician
Credentials M.D.
Gender Male
NPI Issued 09/20/2005

Brand vs generic prescribing mix · Above average

ROBERT GORDON, M.D. — brand share 26.0%
Specialty average (est.)

26% brand-name claims vs 74% generic, on 824 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.

824
Total Claims
$139K
Total Drug Cost
97
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,285
Total Day Supply
37,684
Brand vs Generic
26% brand / 74% generic
Brand Drug Cost
$117K
Generic Drug Cost
$22K
Opioid Claims
30 (3.6% rate)
Antibiotic Claims
11

Patient Demographics

Average Patient Age
73.5 years
Avg HCC Risk Score
1.41
Gender Split
49% female / 51% male

Top Prescribed Drugs (Medicare Part D)

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

What ROBERT GORDON, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Montelukast Sodium
125
Zolpidem Tartrate
69
Clonazepam
51
Anoro Ellipta
Umeclidinium Brm/Vilanterol Tr
38
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
36
Symbicort
Budesonide/Formoterol Fumarate
28
Temazepam
27
Albuterol Sulfate Hfa
Albuterol Sulfate
23
Gabapentin
23
Armodafinil
21

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

Sleep Medicine (Internal Medicine) Physician Overview

How ROBERT GORDON, M.D. fits within the Sleep Medicine (Internal Medicine) Physician landscape nationally.

857
Sleep Medicine (Internal Medicine) Physician Providers in US
52
States with Sleep Medicine (Internal Medicine) Physician
1,310
Avg Claims per Provider

ROBERT GORDON, M.D.'s 824 claims are below the specialty average of 1,310.

Nearby Sleep Medicine (Internal Medicine) Physician Providers in Oklahoma

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

Compare Sleep Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ROBERT GORDON, M.D.'s specialty?
ROBERT GORDON, M.D. specializes in Sleep Medicine (Internal Medicine) Physician and practices in OKLAHOMA CITY, Oklahoma. Credentials: M.D..
How much does ROBERT GORDON, M.D. prescribe under Medicare Part D?
In 2023, ROBERT GORDON, M.D. wrote 824 Medicare Part D claims totaling $139K in drug costs for 97 beneficiaries.
Where is ROBERT GORDON, M.D. located?
ROBERT GORDON, M.D. is located at 4200 W MEMORIAL RD, OKLAHOMA CITY, OK, 73120. Phone: (405) 286-5946.
What is ROBERT GORDON, M.D.'s NPI number?
ROBERT GORDON, M.D.'s National Provider Identifier (NPI) is 1093701658, issued on 09/20/2005.
Does ROBERT GORDON, M.D. prescribe more brand-name or generic drugs?
ROBERT GORDON, M.D.'s prescribing is 26% brand-name and 74% generic drugs by claim count, with $117K in brand drug costs.
Does ROBERT GORDON, M.D. prescribe opioids?
Yes, ROBERT GORDON, M.D. had 30 opioid claims in 2023 with an opioid prescribing rate of 3.6%.
How many Sleep Medicine (Internal Medicine) Physician providers are there in the US?
There are 857 Sleep Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Sleep Medicine (Internal Medicine) Physician provider writes 1,310 Medicare Part D claims per year.
What drugs does ROBERT GORDON, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ROBERT GORDON, M.D.'s most frequently prescribed drugs include Montelukast Sodium, Zolpidem Tartrate, Clonazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ROBERT GORDON, M.D. accept Medicare?
ROBERT GORDON, M.D. appears in CMS Medicare data with 824 Part D claims and 97 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROBERT GORDON, M.D.'s credentials?
ROBERT GORDON, M.D.'s NPI is 1093701658 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