Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. Mark W Dersch , MD

Urology • Ocala, FL

Active NPI 1538119151 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

1901 Se 18th Ave, Bldg 300
Ocala, FL 344718215

Call 3523511313 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

1901 Se 18th Ave
Bldg 300

Ocala, FL 344718215

Telephone 3523511313
Fax 3523511927
Organization at the Same NPPES Address or Phone
Associates For Urology Care Of Ocala, P.a. Facility NPI 1619080231

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: Advanced Urology Institute Llc. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

Indiana University School Of Medicine

Graduation Year

1989

Medicare patients

1,034 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.

Medicare-allowed amount

About $361,542 in 2024

The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

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, 2024.

Paid by Medicare

About $267,969 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

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, 2024.

30-day fills

11,116 standardized 30-day fills in 2024

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

$955,587 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

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, 2024.

Open Payments general payments, program year 2025

All general payments: $2,203.84 across 64 records.

By nature of payment

  • Food and Beverage: $2,114.00 across 62 records.
  • Education: $89.84 across 2 records.

Reporting-company totals (3 largest of 23)

  • Bayer Healthcare Pharmaceuticals Inc.: $273.12 across 9 records.
  • Procept Biorobotics Corporation: $259.52 across 2 records.
  • Sumitomo Pharma America, Inc.: $188.99 across 9 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.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

37 years (graduated 1989)

CMS Doctors and Clinicians data list 1989 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

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.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

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?”

Guide: What Medicare assignment means

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.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Dersch 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.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Dersch 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.

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.

Guide: What ordering and referring status means

Compared with the same specialty in Ocala and Florida

Billing and prescribing volume is not a quality rating.

Medicare Part B services

More Medicare Part B services than 90% of clinicians listed under Urology in Florida (2024, 682 clinicians with data). Median for this group: 1,437. Middle half: 569 to 4,607.

Too few clinicians listed under Urology in Ocala have Medicare Part B data for 2024 to compare.

Medicare-allowed amount

A higher Medicare-allowed amount than 80% of clinicians listed under Urology in Florida (2024, 682 clinicians with data). Median for this group: $126,394. Middle half: $52,949 to $270,891.

Too few clinicians listed under Urology in Ocala have Medicare Part B data for 2024 to compare.

Paid by Medicare

A higher Medicare payment amount than 80% of clinicians listed under Urology in Florida (2024, 682 clinicians with data). Median for this group: $92,960. Middle half: $39,365 to $204,092.

Too few clinicians listed under Urology in Ocala have Medicare Part B data for 2024 to compare.

Medicare Part D prescriptions

More Part D prescriptions than 80% of clinicians listed under Urology in Ocala, FL (2024, 12 clinicians with data). Median for this group: 1,753. Middle half: 60 to 3,973.

More Part D prescriptions than 95% of clinicians listed under Urology in Florida (2024, 725 clinicians with data). Median for this group: 1,339. Middle half: 366 to 2,301.

Part D drug cost

A higher Part D drug cost than 80% of clinicians listed under Urology in Ocala, FL (2024, 12 clinicians with data). Median for this group: $331,898. Middle half: $6,464 to $850,649.

A higher Part D drug cost than 85% of clinicians listed under Urology in Florida (2024, 725 clinicians with data). Median for this group: $137,247. Middle half: $24,439 to $468,865.

16 active clinicians are listed under Urology with a practice address in Ocala, FL (1,021 in Florida).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Ocala

18.8% of these 16 clinicians have the CMS telehealth indicator.

68.8% of these 16 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), 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

Open Payments · Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): 64 records totaling $2,203.84.

Manufacturer Payment Nature Product Type Amount ($)
Procept Biorobotics Corporation
Food and Beverage
In-kind items and services
AQUABEAM ROBOTIC SYSTEM General $148.27
Teleflex LLC
Food and Beverage
In-kind items and services
BARRIGEL General $140.23
Astellas Pharma US Inc
Food and Beverage
In-kind items and services
Xtandi General $140.00
Ferring Pharmaceuticals Inc.
Food and Beverage
In-kind items and services
ADSTILADRIN General $123.78
Procept Biorobotics Corporation
Food and Beverage
In-kind items and services
AQUABEAM ROBOTIC SYSTEM General $111.25
AngioDynamics, Inc.
Food and Beverage
In-kind items and services
NANOKNIFE General $102.80
Pfizer Inc.
Education
In-kind items and services
— General $84.99
Telix Pharmaceuticals
Food and Beverage
In-kind items and services
ILLUCCIX General $70.72
Dendreon Pharmaceuticals LLC
Food and Beverage
In-kind items and services
PROVENGE General $33.94
Ferring Pharmaceuticals Inc.
Food and Beverage
In-kind items and services
ADSTILADRIN General $33.55
Dendreon Pharmaceuticals LLC
Food and Beverage
In-kind items and services
PROVENGE General $32.61
Bayer Healthcare Pharmaceuticals Inc.
Food and Beverage
In-kind items and services
Nubeqa General $30.43
Bayer Healthcare Pharmaceuticals Inc.
Food and Beverage
In-kind items and services
Nubeqa General $30.43
Bayer Healthcare Pharmaceuticals Inc.
Food and Beverage
In-kind items and services
Nubeqa General $30.43
Bayer Healthcare Pharmaceuticals Inc.
Food and Beverage
In-kind items and services
Nubeqa General $30.43
Bayer Healthcare Pharmaceuticals Inc.
Food and Beverage
In-kind items and services
Nubeqa General $30.43
Bayer Healthcare Pharmaceuticals Inc.
Food and Beverage
In-kind items and services
Nubeqa General $30.43
Bayer Healthcare Pharmaceuticals Inc.
Food and Beverage
In-kind items and services
Nubeqa General $30.43
Bayer Healthcare Pharmaceuticals Inc.
Food and Beverage
In-kind items and services
Nubeqa General $30.43
Bayer Healthcare Pharmaceuticals Inc.
Food and Beverage
In-kind items and services
Nubeqa General $29.68
Endo USA, Inc.
Food and Beverage
In-kind items and services
XIAFLEX General $29.15
Sumitomo Pharma America, Inc.
Food and Beverage
In-kind items and services
ORGOVYX General $28.89
ACCORD HEALTHCARE, INC.
Food and Beverage
In-kind items and services
Camcevi General $27.47
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
PLUVICTO General $27.07
Dendreon Pharmaceuticals LLC
Food and Beverage
In-kind items and services
PROVENGE General $26.47

(top 25 shown)

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B · Data Year 2024
Reporting Year:

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 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, 2017–2024; 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
Q9967 Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml
2,175 29 $1.00 $0.13
81003 Automated urinalysis test
1,753 926 $5.00 $2.20
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
1,565 871 $38.32 $17.01
J9030 Bcg live intravesical instillation, 1 mg
1,250 14 $5.04 $2.85
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
1,199 709 $316.92 $131.56
36415 Insertion of needle into vein for collection of blood sample
599 440 $10.77 $6.98
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
443 351 $216.77 $93.39
51798 Ultrasound measurement of bladder capacity after voiding
394 272 $26.42 $11.25
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month
270 59 $155.11 $64.93
A9579 Injection, gadolinium-based magnetic resonance contrast agent, not otherwise specified (nos), per ml
263 16 $3.65 $1.48
52000 Diagnostic exam of bladder and urethra using an endoscope
220 186 $513.46 $84.49
74018 X-ray of abdomen, 1 view
203 150 $63.96 $30.27
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
102 102 $417.65 $172.82
99439 Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month
82 38 $118.28 $49.37
76872 Ultrasound scan of pelvic region through rectum
62 62 $134.26 $33.24
99426 Principal care management services for a single high-risk disease, first 30 minutes of clinical staff time directed by health care professional, per calendar month
38 11 $153.05 $64.60
51720 Instillation of anti-cancer drug into bladder
31 17 $217.23 $90.04
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
31 31 $279.45 $115.40
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
29 28 $140.79 $57.98
74178 Ct scan of abdomen and pelvis before and after contrast
27 27 $565.48 $250.68
72197 Mri scan of pelvis before and after contrast
26 13 $643.27 $173.19
96402 Administration of hormonal anti-neoplastic chemotherapy under skin or into muscle
26 14 $81.92 $35.16
55700 Biopsy of prostate gland
25 25 $527.48 $137.25
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional
23 21 $56.83 $23.11
96372 Injection of drug or substance under skin or into muscle
18 11 $35.00 $14.39

(top 25 shown)

Source: CMS Part B by Provider and Service, 2024; 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 2024.

CMS Part D · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Tamsulosin Hcl Tamsulosin Hcl 1,273 112,301 $18,521.72 441
Finasteride Finasteride 832 75,351 $12,318.61 258
Dutasteride Dutasteride 498 43,534 $17,362.51 163
Alfuzosin Hcl Er Alfuzosin Hcl 187 16,601 $5,391.52 60
Solifenacin Succinate Solifenacin Succinate 185 15,444 $14,749.23 81
Silodosin Silodosin 132 9,910 $14,929.38 50
Gemtesa Vibegron 122 9,379 $145,546.91 49
Orgovyx Relugolix 115 3,420 $304,007.07 20
Myrbetriq Mirabegron 93 7,223 $105,730.16 37
Tadalafil Tadalafil 67 5,326 $4,389.77 24
Levofloxacin Levofloxacin 64 262 $222.29 63
Methenamine Hippurate Methenamine Hippurate 59 5,145 $6,403.57 25
Nitrofurantoin Nitrofurantoin Macrocrystal 55 3,834 $2,739.06 23
Sildenafil Citrate Sildenafil Citrate 46 1,983 $839.59 14
Doxazosin Mesylate Doxazosin Mesylate 42 3,840 $790.57 11
Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst 40 367 $727.31 36
Tramadol Hcl Tramadol Hcl 37 115 $95.54 33
Terazosin Hcl Terazosin Hcl 31 2,830 $535.27 —
Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav 26 178 $143.58 25
Allopurinol Allopurinol 25 1,870 $227.20 —
Tolterodine Tartrate Er Tolterodine Tartrate 24 1,724 $3,806.95 11
Xtandi Enzalutamide 20 600 $273,543.44 —
Testosterone Testosterone 20 1,300 $5,272.60 —
Nystatin Nystatin 19 281 $119.29 13
Dutasteride-Tamsulosin Dutasteride/Tamsulosin Hcl 19 1,710 $5,373.06 —

(top 25 shown)

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2020-12-22
Urology Primary Specialty

NUCC Taxonomy Code: 208800000X

License # reported to NPPES FL ME66575

A urologist manages benign and malignant medical and surgical disorders of the genitourinary system and the adrenal gland. This specialist has comprehensive knowledge of and skills in endoscopic, percutaneous and open surgery of congenital and acquired conditions of the urinary and reproductive systems and their contiguous structures.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Florida Department of Health Medical Quality Assurance.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - UROLOGY

Medicare Enrollment ID

I20090102000232

Enrollment State Jurisdiction

FL

PECOS Control ID

3870577174

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Advanced Urology Institute Llc

1901 Se 18th Ave, Ocala, FL 344718214

Phone: 3523511313

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

9 listed
Angelika Agudelo , NP-C

Nurse Practitioner - Family

NPI 1265057798

Nurse Practitioner (Certified)

NPI 1801356720

Doctor of Medicine (M.D.)

NPI 1891891594

Doctor of Medicine (M.D.)

Stephanie Heald , APRN

Nurse Practitioner - Family

NPI 1184347858

Advanced Practice Registered Nurse

NPI 1205834728

Doctor of Medicine (M.D.)

NPI 1033169859

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

7 Historical Events
📍
Updated Business Mailing Address December 22, 2020

Registered at 12109 COUNTY ROAD 103, OXFORD, FL 344842951 (Tel: 3522058981)

âś…
NPI Profile Active August 11, 2010

NPI status registered as active in NPPES database

📍
Practice Location (Initial Record) August 11, 2010

Registered at 1901 SE 18TH AVE, BLDG 300, OCALA, FL 344718215 (Tel: 3523511313)

📍
Business Mailing Address (Initial Record) August 11, 2010

Registered at 12109 CR 103, OXFORD, FL 344842967 (Tel: 3523916494)

👤
Provider Name / Credentials (Initial Record) August 11, 2010

Recorded as MARK DERSCH, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) August 11, 2010

Urology (license number reported to NPPES: FL ME66575)

🟢
Initial NPI Registration & Enumeration May 12, 2006

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1538119151
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: May 12, 2006
Last Update: December 22, 2020
Sole Proprietor: No

Other Urology Specialists in Ocala

All Urology Specialists in Ocala

Mailing Address

12109 County Road 103

Oxford, FL 344842951

Phone: 3522058981

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.