Medicare Enrolled
Dr. George Grunberger, MD
Endocrinology · Bloomfield Hills, MI
Practice pattern: Remote Monitoring
— Significant remote device monitoring activity
Speaking/Promotional
Very High
DATA COVERAGE
Data in 4 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. Grunberger 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. Grunberger
Dr. George Grunberger is an endocrinology specialist in Bloomfield Hills, MI, with 21 years of NPI registration. Based on federal Medicare data, Dr. Grunberger performed 2,273 Medicare services across 979 unique beneficiaries.
Between the years covered by Open Payments, Dr. Grunberger received a total of $1,005,118 from 68 pharmaceutical and/or device companies across 1713 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in endocrinology. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Grunberger is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 21 years in practice
▲ Top 15% volume in MI
$1,005,118 industry payments
Medicare Practice Summary
Medicare Utilization ↗2,273
Medicare services
Top 15% in MI for endocrinology
979
Unique beneficiaries
$41
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~108 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 |
|---|---|---|---|
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
607 | $9 | $25 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
559 | $93 | $183 |
| Continuous glucose monitoring with interpretation This procedure involves monitoring blood sugar levels in tissue fluid using a sensor placed under the skin, along with the interpretation and reporting of the results. |
335 | $27 | $85 |
| Blood glucose level test A test that measures the amount of sugar in your blood. |
334 | $4 | $20 |
| Self-care/home management training, per 15 min Instruction provided to help patients manage their own care or daily activities at home. The service is billed in 15-minute increments. |
115 | $26 | $75 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
82 | $140 | $246 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
72 | $67 | $153 |
| Urine microalbumin test A laboratory test that measures the amount of a specific protein called microalbumin in a urine sample. This analysis helps assess kidney function. |
61 | $6 | $11 |
| Creatinine test (kidney function) A blood test that measures the amount of creatinine to assess kidney function or detect muscle injury. |
61 | $5 | $15 |
| Continuous glucose monitoring, tissue fluid This procedure involves continuous monitoring of blood sugar levels in tissue fluid using a sensor placed under the skin. |
19 | $44 | $75 |
| Continuous glucose monitoring, sensor under skin This procedure involves continuous monitoring of blood sugar levels in tissue fluid using a sensor placed under the skin with provider-supplied equipment. |
15 | $105 | $275 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
13 | $134 | $278 |
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.
Industry Payment Transparency
Open Payments through 2024 ↗$1,005,118
Total received (2018-2024)
Avg $143,588/year across 7 years
Top 2% in MI for endocrinology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
68
Companies
1,713
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$856,969 (85.3%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$81,565 (8.1%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$66,584 (6.6%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$92,755
2023
$103,345
2022
$180,715
2021
$94,662
2020
$94,425
2019
$226,029
2018
$213,187
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Lilly USA, LLC
$67,346
Abbott Laboratories
$9,300
SANOFI-AVENTIS U.S. LLC
$8,685
Mannkind Corporation
$2,500
VERTEX PHARMACEUTICALS INCORPORATED
$1,800
Nevro Corp.
$1,403
Novo Nordisk Inc
$344
CeQur Corporation
$311
Dexcom, Inc.
$219
Xeris Pharmaceuticals, Inc.
$195
Corcept Therapeutics
$102
Medtronic, Inc.
$98
Insulet Corporation
$82
Lexicon Pharmaceuticals, Inc.
$48
Bayer Healthcare Pharmaceuticals Inc.
$47
Boehringer Ingelheim Pharmaceuticals, Inc.
$41
Amneal Pharmaceuticals LLC
$36
Amphastar Pharmaceuticals, Inc.
$33
Ascensia Diabetes Care Us Inc.
$33
Neurocrine Biosciences, Inc.
$27
RECORDATI_RARE_DISEASES_INC.
$23
Alvogen Inc
$22
Tandem Diabetes Care, Inc.
$22
Ultragenyx Pharmaceutical Inc.
$22
Chiesi USA, Inc.
$17
Top 3 companies account for 92.0% of 2024 payments
All-time payments by company (2018-2024) ›
Lilly USA, LLC
$392,787
SANOFI-AVENTIS U.S. LLC
$165,553
Novo Nordisk Inc
$137,086
Abbott Laboratories
$62,382
Nevro Corp.
$45,321
AstraZeneca Pharmaceuticals LP
$25,710
LIFESCAN, INC.
$20,974
Boehringer Ingelheim Pharmaceuticals, Inc.
$16,937
Senseonics, Incorporated
$16,850
CeQur Corporation
$14,448
Becton, Dickinson and Company
$13,345
Janssen Pharmaceuticals, Inc
$9,778
Xeris Pharmaceuticals, Inc.
$9,591
Ipsen Bioscience Inc.
$8,978
Boehringer Ingelheim RCV GmbH & Co KG
$7,746
Merck Sharp & Dohme Corporation
$7,295
Tandem Diabetes Care, Inc.
$5,898
Amarin Pharma Inc.
$5,865
Mannkind Corporation
$5,561
DEXCOM, INC.
$4,348
Eli Lilly and Company
$4,240
Lexicon Pharmaceuticals, Inc.
$4,004
Medtronic, Inc.
$3,581
Valeritas, Inc.
$3,480
Corcept Therapeutics
$3,362
Vertex Pharmaceuticals Incorporated
$2,100
VERTEX PHARMACEUTICALS INCORPORATED
$1,800
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$1,505
Insulet Corporation
$1,235
Dexcom, Inc.
$426
Medtronic MiniMed, Inc.
$393
Esperion Therapeutics, Inc.
$340
MannKind Corporation
$182
Antares Pharma, Inc.
$146
Amgen Inc.
$146
LifeScan, Inc.
$139
Clarus Therapeutics Inc.
$137
Radius Health, Inc.
$124
Ascendis Pharma Inc
$102
Ipsen Biopharmaceuticals, Inc
$102
Bayer Healthcare Pharmaceuticals Inc.
$99
Amneal Pharmaceuticals LLC
$88
RECORDATI_RARE_DISEASES_INC.
$82
Embecta Corp.
$72
Takeda Pharmaceuticals U.S.A., Inc.
$62
Amryt Pharma Holdings Ltd
$58
Alexion Pharmaceuticals, Inc.
$49
Janssen Scientific Affairs, LLC
$49
AbbVie Inc.
$46
Ultragenyx Pharmaceutical Inc.
$46
Bayer HealthCare Pharmaceuticals Inc.
$44
Companion Medical, Inc.
$43
VIVUS, Inc.
$38
Zimmer Biomet Holdings, Inc.
$37
Horizon Therapeutics plc
$34
Amphastar Pharmaceuticals, Inc.
$33
Ascensia Diabetes Care Us Inc.
$33
Averitas Pharma Inc.
$28
Neurocrine Biosciences, Inc.
$27
Novartis Pharmaceuticals Corporation
$22
Alvogen Inc
$22
EUSA Pharma (US) LLC
$20
VIVUS LLC
$18
Chiesi USA, Inc.
$17
GRT US Holding, Inc.
$15
Kowa Pharmaceuticals America, Inc.
$14
Alfasigma USA, Inc.
$13
EISAI INC.
$13
Top 3 companies account for 69.2% of all-time payments
Associated products mentioned in payments ›
ACCURIAN · AFREZZA · BAQSIMI · BD NANO · BD Nano · BD Nano 2nd Gen Pen Needle · BYDUREON · Belviq · CRENESSITY · CYCLOSET · CeQur Simplicity · Crysvita · DEXCOM G6 CGM SYSTEM · DEXCOM G6 TRANSMITTER · DISEASE STATE · Dexcom CGM · Dexcom G6 Transmitter · EVENITY · EVERSENSE E3 SENSOR KIT - RETAIL · Eversense · FARXIGA · FIASP · FORTEO · FREESTYLE LIBRE · FREESTYLE LIBRE 2 · FREESTYLE LIBRE 3 · FREESTYLE LIBRE PRO · FREESTYLE LITE · FreeStyle Libre · FreeStyle Libre 2 · FreeStyle Libre Pro · FreeStyle Libre blood glucose Flash Monitoring System · GVOKE HYPOPEN · GVOKE PFS · Guardian Connect · HUMALOG · HUMULIN · HUMULIN U · INPEN SMART INSULIN DELIVERY SYSTEM · INTELLIS ADAPTIVESTIM · INVOKANA · ISTURISA · InPen · Inpefa · JANUVIA · JARDIANCE · JATENZO · Kerendia · Korlym · LEQVIO · Livalo · MINIMED 770G · MINIMED 780G · MOUNJARO · MYCAPSSA · Minimed 670G System · Minimed 770G System · NEXLETOL · NEXLIZET · NO PRODUCT DISCUSSED · NOCDURNA · ONETOUCH VERIO FLEX · ONETOUCH VERIO REFLECT · OT Verio Reflect "One Touch Meter and Strips" · Omnia · Omnipod · OneTouch · OneTouch Verio Reflect · Ozempic · QSYMIA · QUTENZA · Qsymia · Qutenza · RYBELSUS · Repatha · Rybelsus · SOLIQUA · SOLIQUA 100/33 · SOMATULINE DEPOT · STRENSIQ · SYNTHROID · Saxenda · Senza · Somatuline Depot · Sylvant · TEPEZZA · TERIPARATIDE · TOUJEO · TRADJENTA · TRULICITY · TZIELD · Tapered Screw · Tresiba · Tymlos · UNITHROID · V-GO · Vascepa · Victoza · Wegovy · XARELTO · XYOSTED · Xultophy 100/3.6 · t-slim insulin pump · t:slim X2 Insulin Pump with Control-IQ · t:slim X2 insulin pump
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
The majority of payments (85%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in endocrinology and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 2% for endocrinology in MI.
Geographic Context
Endocrinologists within 10 mi
81
Per 100K population
6.4
County median income
$95,296
Nearest hospital
TRINITY HEALTH OAKLAND HOSPITAL
3.2 mi
3.2 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Grunberger is a remote monitoring specialist, with above-average Medicare volume (top 15% in MI), with speaking/promotional industry engagement in the top 2% of MI peers, with 21 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Grunberger experienced with hemoglobin a1c test (diabetes monitoring)?
Based on Medicare claims data, Dr. Grunberger performed 607 hemoglobin a1c test (diabetes monitoring) 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.
Does Dr. Grunberger receive payments from pharmaceutical companies?
Yes. Dr. Grunberger received a total of $1,005,118 from 68 companies across 1,713 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Grunberger's costs compare to other endocrinologists in Bloomfield Hills?
Dr. Grunberger's average Medicare payment per service is $41. 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 Very High for Dr. Grunberger) 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 ↗, Open Payments ↗, 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. Data Coverage reflects 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.
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