2026 NPPES data Sleep Medicine (Psychiatry & Neurology) Physician NPI 1063502912 MD
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WENDELL GROGAN, MD

Sleep Medicine (Psychiatry & Neurology) Physician in KINGWOOD, Texas. 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
46
Medicare Part D claims · 11 beneficiaries · Sleep Medicine (Psychiatry & Neurology) Physician avg: 1K
Generic prescribing
70%
generic claims · 30% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

WENDELL GROGAN, MD filed 46 Medicare Part D claims in 2023 as a Sleep Medicine (Psychiatry & Neurology) Physician in KINGWOOD, Texas, prescribing 70% generic.

46
Part D claims, 2023
70%
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.

WENDELL GROGAN, MD's Medicare Part D volume vs every U.S. prescriber

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

46 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 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)

WENDELL GROGAN, 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).

What does the federal data show about WENDELL GROGAN, MD?

Quality data not reported

NPI registry status

Active

Issued 10/13/2006

NPI 1063502912

Primary specialty

Sleep Medicine (Psychiatry & Neurology) Physician

Rare

371 US NPIs in this specialty

Medicare Part D claims

46 95% vs specialty avg

2023 prescription claims

Specialty avg: 1,005

Specialty distribution in Texas

How Sleep Medicine (Psychiatry & Neurology) Physician compares to other specialties among Texas providers

Texas providers

Sleep Medicine (Psychiatry & Neurology) Physician share within Texas

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Sleep Medicine (Psychiatry & Neurology) 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).

WENDELL GROGAN, MD appears in the CMS NPPES registry as a Sleep Medicine (Psychiatry & Neurology) Physician provider holding MD credentials at 22999 HIGHWAY 59 N STE 416, KINGWOOD, TX, 77339, with a listed phone of (281) 359-5981. NPI 1063502912 was issued on 10/13/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GROGAN 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 46 prescription claims written by this provider, covering 11 Medicare beneficiaries and totaling roughly $8K in drug spend, split 30% brand-name and 70% 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.

Sleep Medicine (Psychiatry & Neurology) Physician is a narrow specialty nationwide, with 371 enrolled providers across 45 states and an average of 1,005 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

22999 HIGHWAY 59 N STE 416
KINGWOOD, TX 77339

Provider Details

NPI 1063502912
Specialty Sleep Medicine (Psychiatry & Neurology) Physician
Credentials MD
Gender Male
NPI Issued 10/13/2006

License & disciplinary context — Texas TMB 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 ~77K Texas medical licensees in 2023 — they are NOT specific to WENDELL GROGAN, MD. To verify WENDELL GROGAN, MD's current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases

TMB 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 Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Above average

WENDELL GROGAN, MD — brand share 30.0%
Specialty average (est.)

30% brand-name claims vs 70% generic, on 46 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.

46
Total Claims
$8K
Total Drug Cost
11
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
88
Total Day Supply
2,578
Brand vs Generic
30% brand / 70% generic
Brand Drug Cost
$7K
Generic Drug Cost
$949

Patient Demographics

Average Patient Age
76.7 years
Avg HCC Risk Score
1.15
Age Distribution
<65: 0, 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
Repatha Sureclick
Evolocumab
13

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

Sleep Medicine (Psychiatry & Neurology) Physician Overview

How WENDELL GROGAN, MD fits within the Sleep Medicine (Psychiatry & Neurology) Physician landscape nationally.

371
Sleep Medicine (Psychiatry & Neurology) Physician Providers in US
45
States with Sleep Medicine (Psychiatry & Neurology) Physician
1,005
Avg Claims per Provider

WENDELL GROGAN, MD's 46 claims are below the specialty average of 1,005.

Nearby Sleep Medicine (Psychiatry & Neurology) Physician Providers in Texas

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

Compare Sleep Medicine (Psychiatry & Neurology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is WENDELL GROGAN, MD's specialty?
WENDELL GROGAN, MD specializes in Sleep Medicine (Psychiatry & Neurology) Physician and practices in KINGWOOD, Texas. Credentials: MD.
How much does WENDELL GROGAN, MD prescribe under Medicare Part D?
In 2023, WENDELL GROGAN, MD wrote 46 Medicare Part D claims totaling $8K in drug costs for 11 beneficiaries.
Where is WENDELL GROGAN, MD located?
WENDELL GROGAN, MD is located at 22999 HIGHWAY 59 N STE 416, KINGWOOD, TX, 77339. Phone: (281) 359-5981.
What is WENDELL GROGAN, MD's NPI number?
WENDELL GROGAN, MD's National Provider Identifier (NPI) is 1063502912, issued on 10/13/2006.
Does WENDELL GROGAN, MD prescribe more brand-name or generic drugs?
WENDELL GROGAN, MD's prescribing is 30% brand-name and 70% generic drugs by claim count, with $7K in brand drug costs.
How many Sleep Medicine (Psychiatry & Neurology) Physician providers are there in the US?
There are 371 Sleep Medicine (Psychiatry & Neurology) Physician providers across 45 states in the US. The average Sleep Medicine (Psychiatry & Neurology) Physician provider writes 1,005 Medicare Part D claims per year.
What drugs does WENDELL GROGAN, MD prescribe most often?
Based on 2023 Medicare Part D data, WENDELL GROGAN, MD's most frequently prescribed drugs include Repatha Sureclick. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WENDELL GROGAN, MD accept Medicare?
WENDELL GROGAN, MD appears in CMS Medicare data with 46 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 WENDELL GROGAN, MD's credentials?
WENDELL GROGAN, MD's NPI is 1063502912 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