2026 NPPES data Anesthesiology Physician NPI 1558332221 MD
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MARK BROWN, MD

Anesthesiology Physician in SUGARLAND, 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
1K
Medicare Part D claims · 120 beneficiaries · Anesthesiology Physician avg: 860
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

MARK BROWN, MD filed 1,235 Medicare Part D claims in 2023 as a Anesthesiology Physician in SUGARLAND, Texas, prescribing 97% generic.

1K
Part D claims, 2023
97%
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.

MARK BROWN, MD's Medicare Part D volume vs every U.S. prescriber

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

1,235 Top 22% higher than 78% 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%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). This entry sits in this band. 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)

MARK BROWN, 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 MARK BROWN, MD?

Quality data not reported

NPI registry status

Active

Issued 01/30/2006

NPI 1558332221

Primary specialty

Anesthesiology Physician

High-volume

56,398 US NPIs in this specialty

Medicare Part D claims

1,235 44% vs specialty avg

2023 prescription claims

Specialty avg: 860

Specialty distribution in Texas

How Anesthesiology Physician compares to other specialties among Texas providers

Texas providers

Anesthesiology Physician share within Texas

1. Anesthesiology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Anesthesiology Physician share within Texas

Specialty board-certification context

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

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

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

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

MARK BROWN, MD appears in the CMS NPPES registry as a Anesthesiology Physician provider holding MD credentials at 1111 HWY 6, SUGARLAND, TX, 77478, with a listed phone of (281) 494-6900. NPI 1558332221 was issued on 01/30/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BROWN 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 1,235 prescription claims written by this provider, covering 120 Medicare beneficiaries and totaling roughly $54K in drug spend, split 3% brand-name and 97% generic by claim count, with an opioid prescribing rate of 50.7%. 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.

Anesthesiology Physician is a high-volume specialty nationwide, with 56,398 enrolled providers across 56 states and an average of 860 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

1111 HWY 6
SUGARLAND, TX 77478

Provider Details

NPI 1558332221
Specialty Anesthesiology Physician
Credentials MD
Gender Male
NPI Issued 01/30/2006

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 MARK BROWN, MD. To verify MARK BROWN, 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 · Generic-heavy

MARK BROWN, MD — brand share 3.0%
Specialty average (est.)

3% brand-name claims vs 97% generic, on 1,235 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.

1,235
Total Claims
$54K
Total Drug Cost
120
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,365
Total Day Supply
39,905
Brand vs Generic
3% brand / 97% generic
Brand Drug Cost
$17K
Generic Drug Cost
$37K
Opioid Claims
626 (50.7% rate)

Patient Demographics

Average Patient Age
69.6 years
Avg HCC Risk Score
1.58
Gender Split
63% female / 37% male

Top Prescribed Drugs (Medicare Part D)

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

What MARK BROWN, MD 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
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
186
Gabapentin
141
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
105
Baclofen
97
Oxycodone Hcl
82
Tramadol Hcl
77
Meloxicam
60
Morphine Sulfate Er
Morphine Sulfate
54
Methocarbamol
45
Fentanyl
42

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

Anesthesiology Physician Overview

How MARK BROWN, MD fits within the Anesthesiology Physician landscape nationally.

56,398
Anesthesiology Physician Providers in US
56
States with Anesthesiology Physician
860
Avg Claims per Provider

MARK BROWN, MD's 1,235 claims are above the specialty average of 860.

Nearby Anesthesiology Physician Providers in Texas

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

Compare Anesthesiology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARK BROWN, MD's specialty?
MARK BROWN, MD specializes in Anesthesiology Physician and practices in SUGARLAND, Texas. Credentials: MD.
How much does MARK BROWN, MD prescribe under Medicare Part D?
In 2023, MARK BROWN, MD wrote 1,235 Medicare Part D claims totaling $54K in drug costs for 120 beneficiaries.
Where is MARK BROWN, MD located?
MARK BROWN, MD is located at 1111 HWY 6, SUGARLAND, TX, 77478. Phone: (281) 494-6900.
What is MARK BROWN, MD's NPI number?
MARK BROWN, MD's National Provider Identifier (NPI) is 1558332221, issued on 01/30/2006.
Does MARK BROWN, MD prescribe more brand-name or generic drugs?
MARK BROWN, MD's prescribing is 3% brand-name and 97% generic drugs by claim count, with $17K in brand drug costs.
Does MARK BROWN, MD prescribe opioids?
Yes, MARK BROWN, MD had 626 opioid claims in 2023 with an opioid prescribing rate of 50.7%.
How many Anesthesiology Physician providers are there in the US?
There are 56,398 Anesthesiology Physician providers across 56 states in the US. The average Anesthesiology Physician provider writes 860 Medicare Part D claims per year.
What drugs does MARK BROWN, MD prescribe most often?
Based on 2023 Medicare Part D data, MARK BROWN, MD's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Gabapentin, Oxycodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARK BROWN, MD accept Medicare?
MARK BROWN, MD appears in CMS Medicare data with 1,235 Part D claims and 120 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARK BROWN, MD's credentials?
MARK BROWN, MD's NPI is 1558332221 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