Dr. David Waterhouse Gray , MD
Internal Medicine • Clearwater, FL
612 Druid Rd E
Clearwater, FL 337563912
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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NPI assigned on June 15, 2011; this date does not establish years in practice.
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Published CMS data list 95,193 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:
- J3262 — Injection, tocilizumab, 1 mg: 58,320 service units.
- J0717 — Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered): 14,200 service units.
- J3111 — Injection, romosozumab-aqqg, 1 mg: 7,140 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.
See all 31 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 129 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:
- Hydroxychloroquine Sulfate — 47 prescription fills, including refills.
- Leucovorin Calcium — 21 prescription fills, including refills.
- Prednisone — 15 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 7 records in the table · Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 379 in 2017 to 95,193 in 2020.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2020.
Practice Location & Contact Primary Location
612 Druid Rd E
Clearwater, FL 337563912
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 $1,048,131 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 $825,807 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
291 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
$63,508 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.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $23.48 in 2023
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2023.
NPI first issued
2011
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. Gray 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. Gray 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 Clearwater and Florida
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Gray are from 2020.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Gray are from 2021.
133 active clinicians are listed under Internal Medicine with a practice address in Clearwater, FL (10,165 in Florida).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Clearwater
18% of these 133 clinicians have the CMS telehealth indicator.
66.2% of these 133 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 increased 25017% from 379 in 2017 to 95,193 in 2020.
- 2017: 379
- 2018: 126,622
- 2019: 133,463
- 2020: 95,193
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Medicare-allowed amount
Medicare-allowed amount increased 4559% from $22,497 in 2017 to $1,048,131 in 2020.
- 2017: $22,497
- 2018: $1,587,911
- 2019: $1,860,307
- 2020: $1,048,131
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Paid by Medicare
Paid by Medicare increased 4389% from $18,398 in 2017 to $825,807 in 2020.
- 2017: $18,398
- 2018: $1,264,305
- 2019: $1,476,809
- 2020: $825,807
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 93% from 67 in 2017 to 129 in 2021.
- 2017: 67
- 2018: 617
- 2019: 1,280
- 2020: 1,500
- 2021: 129
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30-day fills
30-day fills increased 213% from 93 in 2017 to 291 in 2021.
- 2017: 93
- 2018: 969
- 2019: 2,098
- 2020: 2,710
- 2021: 291
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Part D drug cost
Part D drug cost increased 1655% from $3,618 in 2017 to $63,508 in 2021.
- 2017: $3,618
- 2018: $157,400
- 2019: $373,250
- 2020: $651,797
- 2021: $63,508
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Industry payments (Open Payments)
Industry payments (Open Payments) decreased 99% from $3,825.87 in 2019 to $23.48 in 2023.
- 2019: $3,825.87
- 2020: $1,940.89
- 2021: $21.46
- 2023: $23.48
Sources: CMS Medicare Physician & Other Practitioners (2020), CMS Medicare Part D Prescribers (2021), CMS Open Payments (2023), 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 2023 (payments made January 1 – December 31, 2023): fewer than 11 records totaling $23.48.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Teva Pharmaceuticals USA, Inc. |
Food and Beverage
In-kind items and services
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— | General | $23.48 |
Source: CMS Open Payments, program year 2023, 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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J3262
Injection, tocilizumab, 1 mg
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58,320 | 29 | $8.00 | $5.20 |
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J0717
Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered)
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14,200 | 23 | $11.00 | $8.05 |
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J3111
Injection, romosozumab-aqqg, 1 mg
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7,140 | 14 | $15.00 | $8.99 |
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J0897
Injection, denosumab, 1 mg
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6,060 | 76 | $25.31 | $19.14 |
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J0129
Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered)
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3,100 | 19 | $65.26 | $55.22 |
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J1745
Injection, infliximab, excludes biosimilar, 10 mg
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1,380 | 16 | $129.00 | $53.60 |
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A9585
Injection, gadobutrol, 0.1 ml
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1,375 | 14 | $1.00 | $0.36 |
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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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730 | 273 | $250.29 | $107.59 |
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J9250
Methotrexate sodium, 5 mg
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619 | 11 | $7.00 | $0.23 |
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J3301
Injection, triamcinolone acetonide, not otherwise specified, 10 mg
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394 | 50 | $7.00 | $1.46 |
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96401
Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle
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351 | 106 | $148.00 | $76.48 |
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85025
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
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264 | 157 | $24.00 | $7.66 |
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36415
Insertion of needle into vein for collection of blood sample
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251 | 178 | $13.00 | $2.96 |
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96413
Administration of chemotherapy into vein, 1 hour or less
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206 | 84 | $372.00 | $135.93 |
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73110
X-ray of wrist, minimum of 3 views
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95 | 92 | $94.00 | $73.45 |
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73130
X-ray of hand, minimum of 3 views
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94 | 91 | $83.00 | $66.52 |
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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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78 | 69 | $295.00 | $145.72 |
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96415
Administration of chemotherapy into vein, each additional hour
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66 | 25 | $87.00 | $29.52 |
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99205
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
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65 | 65 | $435.28 | $207.09 |
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73630
X-ray of foot, minimum of 3 views
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61 | 59 | $84.34 | $60.75 |
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73610
X-ray of ankle, minimum of 3 views
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60 | 59 | $82.00 | $65.12 |
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96372
Injection of drug or substance under skin or into muscle
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55 | 33 | $54.00 | $13.86 |
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20610
Aspiration and/or injection of fluid from large joint
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53 | 29 | $251.00 | $63.36 |
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96375
Injection of additional new drug or substance into vein
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43 | 14 | $59.00 | $15.97 |
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77085
Dxa bone density measurement of hip, pelvis, spine including spine fracture assessment
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35 | 35 | $135.00 | $51.64 |
(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 |
|---|---|---|---|---|---|
| Hydroxychloroquine Sulfate | Hydroxychloroquine Sulfate | 47 | 3,858 | $5,037.07 | 27 |
| Leucovorin Calcium | Leucovorin Calcium | 21 | 1,532 | $1,207.67 | 11 |
| Prednisone | Prednisone | 15 | 1,034 | $168.10 | — |
| Methotrexate | Methotrexate Sodium | 12 | 807 | $410.41 | — |
| Methotrexate Sodium | Methotrexate Sodium/Pf | 12 | 456 | $140.70 | — |
| Gabapentin | Gabapentin | 11 | 630 | $229.81 | — |
| Orencia Clickject | Abatacept | 11 | 308 | $56,314.21 | — |
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.
NUCC Taxonomy Code: 207RR0500X
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and "collagen" diseases.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - RHEUMATOLOGY
I20171011000921
FL
6507131968
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine - Rheumatology
Doctor of Medicine (M.D.)
Internal Medicine - Rheumatology
Doctor of Medicine (M.D.)
Nurse Practitioner - Family
Advanced Registered Nurse Practitioner
Nurse Practitioner - Adult Health
Advanced Registered Nurse Practitioner
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 612 DRUID RD E, CLEARWATER, FL 337563912 (Tel: 7274436400)
Registered at 612 DRUID RD E, CLEARWATER, FL 337563912 (Tel: 7274436400)
Internal Medicine (license number reported to NPPES: FL 133561)
NPI status registered as active in NPPES database
Registered at 800 WASHINGTON ST, BOSTON, MA 021111552 (Tel: 6176365000)
Registered at 800 WASHINGTON ST, BOSTON, MA 021111552
Recorded as DAVID GRAY, M.D.
Internal Medicine (license number reported to NPPES: MA 248869)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Clearwater
- Dr. Dai Qi Zheng, MD
- Dr. Jeffrey Roth, MD
- Dr. Lorynn Hunter, DO
- Dr. Nareesha Khan, MD
- Dr. Yervant Khatcherian, MD
- Dr. Stephen Shields, MD
Mailing Address
612 Druid Rd E
Clearwater, FL 337563912
Phone: 7274436400