Medicare Enrolled

Dr. Maria Grabow, M.D.

Anesthesiology · San Antonio, TX
Practice pattern: Cardiac Surgery — Surgically focused practice
45 NE LOOP 410, San Antonio, TX 78216
2103757760
In practice since 2005 (20 years)
NPI: 1851374037 verify on NPPES ↗
High
DATA COVERAGE
Data in 3 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating. This page presents federal public records about Dr. Grabow from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Grabow

Dr. Maria Grabow is an anesthesiology specialist in San Antonio, TX, with 20 years of NPI registration. Based on federal Medicare data, Dr. Grabow performed 308 Medicare services across 294 unique beneficiaries.

The Data Coverage level for Dr. Grabow is High — reflecting how much public federal data is available about this provider. This is not a quality rating. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.

✓ 20 years in practice ▲ Top 18% volume in TX

Medicare Practice Summary

Medicare Utilization ↗
308
Medicare services
Top 18% in TX for anesthesiology
294
Unique beneficiaries
$75
Avg. Medicare payment
Medicare patients only (65+ / disabled) · Not a quality rating · How to read this →
~15 Medicare services per year of practice

Top procedures by volume

Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.

Procedure Volume Avg. paid Avg. submitted
Anesthesia for eyelid procedure
Administration of anesthesia during a surgical procedure involving the eyelid.
 99 $79 $1,464
Anesthesia for cataract/lens surgery
Administration of anesthesia during eye lens surgery. This code covers the anesthetic service provided for the procedure.
 88 $59 $1,104
Anesthesia for retinal surgery
Administration of anesthesia during surgical procedures on the retina.
 73 $86 $1,647
Anesthesia for lower leg, ankle, or foot bone procedure
Administration of anesthesia during surgical procedures involving the bones of the lower leg, ankle, or foot.
 23 $72 $1,365
Anesthesia for head, neck, or upper back procedure
Administration of anesthesia for surgical procedures involving the skin, muscles, or nerves of the head, neck, or upper back.
 14 $80 $1,365
Anesthesia for other eye procedure
Administration of anesthesia for surgical procedures on the eye that are not otherwise specified.
 11 $93 $1,869
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
52.3% high complexity
0.0% medium
47.7% routine
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Geographic Context

Anesthesiologists within 10 mi
467
Per 100K population
22.9
County median income
$70,571
Nearest hospital
BAPTIST NEIGHBORHOOD HOSPITAL THOUSAND OAKS
3.7 mi

Data Sources

Provider Registry ✓ NPPES Weekly updates
Medicare Enrollment ✓ PECOS Monthly updates
Practice Data ✓ Medicare Util. Annual (CY lag)
Industry Payments — No payments N/A
Disciplinary History — Not public N/A

This provider has data in 3 of 4 available federal datasets, with a Data Coverage level of High. This measures how much public data is available about a provider — not how good they are. How we calculate this →

Summary

Dr. Grabow is a cardiac surgery specialist, with above-average Medicare volume (top 18% in TX), with 20 years of NPI registration.

This summary is auto-generated from federal data. It describes data availability and patterns — not clinical quality. Read our methodology →

Frequently Asked Questions

Is Dr. Grabow experienced with anesthesia for eyelid procedure?
Based on Medicare claims data, Dr. Grabow performed 99 anesthesia for eyelid procedure services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
How do Dr. Grabow's costs compare to other anesthesiologists in San Antonio?
Dr. Grabow's average Medicare payment per service is $75. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently High for Dr. Grabow) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →

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About this page

All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.

This page is not medical advice, an endorsement, a recommendation, or a quality rating. The Transparency Score measures data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.

Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology

Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Payments from industry are legal and do not indicate wrongdoing. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →