Dr. John Prospero Gresh , MD
Specialist • Ocala, FL
3301 Sw 34th Cir, Suite 101
Ocala, FL 344746621
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 August 11, 2005; this date does not establish years in practice.
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Published CMS data list 265,973 Original Medicare Part B services in 2022.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022. Published rows only; this is not a quality measure.
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Published Part B service records, 2022:
- 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): 236,800 service units.
- J0897 — Injection, denosumab, 1 mg: 17,460 service units.
- 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): 9,250 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022. Units differ by code; these are not visits or a measure of quality.
See all 10 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 247 Medicare Part D prescriptions, including refills, in 2023.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2023. Published rows only; this is not a quality measure.
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Published Part D records, 2023:
- Prednisone — 72 prescription fills, including refills.
- Methotrexate (Methotrexate Sodium) — 55 prescription fills, including refills.
- Hydroxychloroquine Sulfate — 33 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2023. 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 119,606 in 2018 to 265,973 in 2022.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018–2022.
Practice Location & Contact Primary Location
3301 Sw 34th Cir
Suite 101
Ocala, FL 344746621
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
Specialist: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $2,319,596 in 2022
The total amount Medicare approved for these services in 2022. 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, 2022.
Paid by Medicare
About $1,833,984 in 2022
The part of the Medicare-allowed amount that Medicare itself paid in 2022, 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, 2022.
30-day fills
707 standardized 30-day fills in 2023
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
$8,642 in 2023
The total cost of these prescriptions in 2023, 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, 2023.
Open Payments general payments, program year 2021
All general payments: $248.45 across 2 records.
By nature of payment
- Food and Beverage: $248.45 across 2 records.
Reporting-company totals
- Amgen Inc.: $125.00 across 1 record.
- Horizon Therapeutics plc: $123.45 across 1 record.
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 2021 (published June 30, 2026).
NPI first issued
2005
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. Gresh 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. Gresh 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 Ocala and Florida
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Gresh are from 2022.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Gresh are from 2023.
43 active clinicians are listed under Specialist with a practice address in Ocala, FL (2,695 in Florida).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Ocala
2.3% of these 43 clinicians have the CMS telehealth indicator.
18.6% of these 43 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 122% from 119,606 in 2018 to 265,973 in 2022.
- 2018: 119,606
- 2019: 175,918
- 2020: 210,619
- 2021: 254,365
- 2022: 265,973
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Medicare-allowed amount
Medicare-allowed amount increased 18% from $1,963,259 in 2018 to $2,319,596 in 2022.
- 2018: $1,963,259
- 2019: $2,278,594
- 2020: $2,204,690
- 2021: $2,792,680
- 2022: $2,319,596
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Paid by Medicare
Paid by Medicare increased 18% from $1,548,226 in 2018 to $1,833,984 in 2022.
- 2018: $1,548,226
- 2019: $1,803,701
- 2020: $1,747,200
- 2021: $2,255,617
- 2022: $1,833,984
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 80% from 1,220 in 2019 to 247 in 2023.
- 2019: 1,220
- 2020: 1,092
- 2021: 1,600
- 2022: 1,772
- 2023: 247
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30-day fills
30-day fills decreased 76% from 2,920 in 2019 to 707 in 2023.
- 2019: 2,920
- 2020: 2,537
- 2021: 4,329
- 2022: 4,924
- 2023: 707
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Part D drug cost
Part D drug cost decreased 98% from $419,522 in 2019 to $8,642 in 2023.
- 2019: $419,522
- 2020: $61,208
- 2021: $709,738
- 2022: $1,209,291
- 2023: $8,642
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Industry payments (Open Payments)
Industry payments (Open Payments) decreased 93% from $3,363.92 in 2019 to $248.45 in 2021.
- 2019: $3,363.92
- 2020: $14.85
- 2021: $248.45
Sources: CMS Medicare Physician & Other Practitioners (2022), CMS Medicare Part D Prescribers (2023), CMS Open Payments (2021), 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 2021 (payments made January 1 – December 31, 2021): fewer than 11 records totaling $248.45.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Amgen Inc. |
Food and Beverage
In-kind items and services
|
Enbrel | General | $125.00 |
| Horizon Therapeutics plc |
Food and Beverage
In-kind items and services
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KRYSTEXXA | General | $123.45 |
Source: CMS Open Payments, program year 2021, 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 2016–2021 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, 2017–2022; 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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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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236,800 | 60 | $10.21 | $5.68 |
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J0897
Injection, denosumab, 1 mg
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17,460 | 163 | $33.44 | $21.56 |
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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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9,250 | 16 | $64.29 | $43.60 |
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96401
Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle
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1,168 | 60 | $87.00 | $73.68 |
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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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462 | 273 | $150.00 | $126.81 |
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96372
Injection of drug or substance under skin or into muscle
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310 | 171 | $20.00 | $14.05 |
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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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268 | 187 | $110.00 | $90.10 |
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96413
Administration of chemotherapy into vein, 1 hour or less
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120 | 21 | $160.00 | $132.65 |
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77080
Dxa bone density measurement of hip, pelvis, spine
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104 | 104 | $43.00 | $36.05 |
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96365
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
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31 | 15 | $80.00 | $65.16 |
Source: CMS Part B by Provider and Service, 2022; 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 2023.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Prednisone | Prednisone | 72 | 6,094 | $983.05 | 46 |
| Methotrexate | Methotrexate Sodium | 55 | 4,469 | $2,537.48 | 37 |
| Hydroxychloroquine Sulfate | Hydroxychloroquine Sulfate | 33 | 2,930 | $3,518.11 | 19 |
| Folic Acid | Folic Acid | 24 | 2,160 | $120.09 | 14 |
| Ibandronate Sodium | Ibandronate Sodium | 22 | 1,974 | $822.12 | 12 |
| Allopurinol | Allopurinol | 21 | 1,884 | $325.37 | 12 |
| Alendronate Sodium | Alendronate Sodium | 20 | 1,657 | $335.50 | 11 |
Source: CMS Part D by Provider and Drug, 2023; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 174400000X
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - RHEUMATOLOGY
I20040608000591
FL
1951384429
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.)
Nurse Practitioner
Advanced Registered Nurse Practitioner
Career & Practice History
NPI enumerated August 11, 2005.
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 Specialists in Ocala
- Dr. Thomas Lafferty, MD
- Dr. Nagender Reddy, MD
- Dr. Paul Jo, MD
- Dr. Samantha Johnson, DNP
- Dr. Keertini Kumar, MD
- Dr. Vishnu Reddy, MD
Mailing Address
3301 Sw 34th Cir, Suite 101
Ocala, FL 344746621
Phone: 3528610100