Dr. William E Grubbs , MD
Internal Medicine • Naples, FL
90 Cypress Way E Ste 40
Naples, FL 341109275
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. William Grubbs is listed in NPPES under Internal Medicine.
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NPI assigned on November 13, 2006; this date does not establish years in practice.
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Published CMS data list 2,430 Original Medicare Part B services in 2020.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020. Published rows only; this is not a quality measure.
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Published Part B service records, 2020:
- 99212 — Established patient outpatient office visit: 446 service units.
- 99213 — Established patient outpatient office visit: 421 service units.
- G0447 — Face-to-face behavioral counseling for obesity: 180 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2019 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2020). CPT notice
See all 29 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 131 Medicare Part D prescriptions, including refills, in 2021.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021. Published rows only; this is not a quality measure.
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Published Part D records, 2021:
- Rosuvastatin Calcium — 22 prescription fills, including refills.
- Ezetimibe — 21 prescription fills, including refills.
- Amlodipine Besylate — 19 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 8 records in the table · Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 4,445 in 2017 to 2,430 in 2020.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2020.
Practice Location & Contact Primary Location
90 Cypress Way E Ste 40
Naples, FL 341109275
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $142,241 in 2020
The total amount Medicare approved for these services in 2020. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020.
Paid by Medicare
About $114,050 in 2020
The part of the Medicare-allowed amount that Medicare itself paid in 2020, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020.
30-day fills
340 standardized 30-day fills in 2021
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$33,833 in 2021
The total cost of these prescriptions in 2021, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021.
Open Payments general payments, program year 2020
All general payments: $1,207.30 across 11 records.
By nature of payment
- Consulting Fee: $924.00 across 1 record.
- Food and Beverage: $283.30 across 10 records.
Reporting-company totals (3 largest of 4)
- Novartis Pharmaceuticals Corporation: $946.52 across 2 records.
- AstraZeneca Pharmaceuticals LP: $193.05 across 6 records.
- Novo Nordisk Inc: $43.12 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2020 (published June 30, 2026).
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Grubbs has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Grubbs as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Naples and Florida
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Grubbs are from 2020.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Grubbs are from 2021.
208 active clinicians are listed under Internal Medicine with a practice address in Naples, FL (10,165 in Florida).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Naples
22.1% of these 208 clinicians have the CMS telehealth indicator.
59.6% of these 208 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 45% from 4,445 in 2017 to 2,430 in 2020.
- 2017: 4,445
- 2018: 4,553
- 2019: 3,927
- 2020: 2,430
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Medicare-allowed amount
Medicare-allowed amount decreased 37% from $226,398 in 2017 to $142,241 in 2020.
- 2017: $226,398
- 2018: $267,403
- 2019: $209,111
- 2020: $142,241
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Paid by Medicare
Paid by Medicare decreased 37% from $180,365 in 2017 to $114,050 in 2020.
- 2017: $180,365
- 2018: $220,334
- 2019: $169,027
- 2020: $114,050
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 81% from 702 in 2017 to 131 in 2021.
- 2017: 702
- 2018: 647
- 2019: 695
- 2020: 597
- 2021: 131
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30-day fills
30-day fills decreased 82% from 1,857 in 2017 to 340 in 2021.
- 2017: 1,857
- 2018: 1,699
- 2019: 1,753
- 2020: 1,590
- 2021: 340
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Part D drug cost
Part D drug cost decreased 61% from $87,232 in 2017 to $33,833 in 2021.
- 2017: $87,232
- 2018: $43,771
- 2019: $99,900
- 2020: $251,040
- 2021: $33,833
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $531.57 in 2019 to $1,207.30 in 2020.
- 2019: $531.57
- 2020: $1,207.30
Sources: CMS Medicare Physician & Other Practitioners (2020), CMS Medicare Part D Prescribers (2021), CMS Open Payments (2020), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2020 (payments made January 1 – December 31, 2020): 11 records totaling $1,207.30.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Novartis Pharmaceuticals Corporation |
Consulting Fee
Cash or cash equivalent
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ENTRESTO | General | $924.00 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FARXIGA | General | $112.52 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Ozempic | General | $24.88 |
| Amarin Pharma Inc. |
Food and Beverage
In-kind items and services
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Vascepa | General | $24.61 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FARXIGA | General | $23.01 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
|
ENTRESTO | General | $22.52 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Ozempic | General | $18.24 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FARXIGA | General | $17.03 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FARXIGA | General | $15.25 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FARXIGA | General | $12.66 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FARXIGA | General | $12.58 |
Source: CMS Open Payments, program year 2020, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2019 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2020; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
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446 | 42 | $64.00 | $47.50 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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421 | 47 | $89.00 | $78.12 |
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G0447
Face-to-face behavioral counseling for obesity, 15 minutes
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180 | 39 | $32.00 | $27.35 |
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81002
Urinalysis, manual test
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120 | 44 | $4.00 | $3.44 |
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51798
Ultrasound measurement of bladder capacity after voiding
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110 | 43 | $48.00 | $10.75 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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107 | 46 | $140.00 | $113.07 |
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93701
Measurement of heart blood flow and respiration
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93 | 43 | $95.00 | $26.94 |
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94375
Test to measure rate of airflow
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90 | 41 | $62.50 | $40.14 |
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36415
Insertion of needle into vein for collection of blood sample
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88 | 41 | $3.01 | $2.97 |
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93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
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81 | 42 | $79.50 | $17.83 |
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99211
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional
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79 | 26 | $36.00 | $23.59 |
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93040
Electrocardiogram (ecg) 1 to 3 leads with review by physician
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62 | 31 | $20.00 | $13.51 |
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95851
Measurement of range of motion in arm, leg or each spine section
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58 | 19 | $79.36 | $22.77 |
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99354
Prolonged office or other outpatient service first hour
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53 | 42 | $157.00 | $136.04 |
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99497
Advance care planning, first 30 minutes
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51 | 33 | $94.50 | $89.11 |
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99358
Prolonged patient service without direct patient contact first hour
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46 | 28 | $132.00 | $116.75 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
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39 | 36 | $200.00 | $152.14 |
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93880
Ultrasound of both sides of head and neck blood flow
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31 | 31 | $248.00 | $204.83 |
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93970
Ultrasound study of arm or leg veins with compression and maneuvers
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31 | 31 | $227.00 | $200.08 |
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82270
Stool analysis for blood to screen for colon tumors
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29 | 29 | $15.17 | $4.33 |
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G0442
Annual alcohol misuse screening, 5 to 15 minutes
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28 | 28 | $25.00 | $18.58 |
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G0446
Annual, face-to-face intensive behavioral therapy for cardiovascular disease, individual, 15 minutes
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28 | 28 | $31.00 | $27.39 |
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76770
Complete ultrasound scan behind abdominal cavity
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27 | 27 | $153.00 | $115.73 |
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93925
Ultrasound of leg arteries or artery grafts
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27 | 27 | $310.00 | $260.32 |
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G0444
Annual depression screening, 5 to 15 minutes
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27 | 27 | $26.04 | $18.54 |
(top 25 shown)
Source: CMS Part B by Provider and Service, 2020; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2021.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Rosuvastatin Calcium | Rosuvastatin Calcium | 22 | 1,620 | $607.78 | 11 |
| Ezetimibe | Ezetimibe | 21 | 1,890 | $1,171.02 | — |
| Amlodipine Besylate | Amlodipine Besylate | 19 | 1,710 | $140.57 | — |
| Vascepa | Icosapent Ethyl | 17 | 1,110 | $11,775.95 | — |
| Allopurinol | Allopurinol | 15 | 870 | $184.12 | — |
| Entresto | Sacubitril/Valsartan | 15 | 1,170 | $19,588.78 | — |
| Levothyroxine Sodium | Levothyroxine Sodium | 11 | 840 | $223.03 | — |
| Metformin Hcl Er | Metformin Hcl | 11 | 990 | $141.74 | — |
Source: CMS Part D by Provider and Drug, 2021; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20100917000646
FL
3577688225
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Career & Practice History
NPI enumerated November 13, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Internal Medicine Providers in Naples
- Dr. Hermes Koop, MD
- Dr. Dulce Taveras-Uceta, MD
- Dr. Yadel Couso, MD
- Dr. Chanci Lopez, MD
- Dr. Vincent Bianca, MD
- Dr. Bryan Murphey, MD
Mailing Address
90 Cypress Way E Ste 40
Naples, FL 341109275
Phone: 2395912141