Dr. Ronald Trent Grenko, MD
- Medicare services, 2024
- 1,836
- Medicare patients, 2024
- 674
- Hospital affiliations
- 1
- Industry payments
- $278
- Medical groups
- 2
- Practice address
- 555 North Duke Street, Lancaster, PA 17602
- Practice phone
- Call (717) 544-5511
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Grenko's professional email, personal email and mobile number
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Dr. Ronald Trent Grenko is a pathologist in Lancaster, Pennsylvania
Dr. Grenko practices at Lancaster General Hospital in Lancaster, Pennsylvania, part of University of Pennsylvania.
Dr. Grenko's NPI, 1861454571, was assigned on April 6, 2006. Dr. Grenko graduated from University of Cincinnati College of Medicine in 1985. Dr. Grenko holds Pennsylvania license MD048891L.
- NPI
- 1861454571NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1153332689
- NPI enumeration date
- April 6, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (717) 544-5511
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ronald Trent Grenko practices at Lancaster General Hospital in Lancaster, Pennsylvania
Dr. Grenko's primary practice is Lancaster General Hospital, at 555 North Duke Street, Lancaster, PA 17602 in Lancaster County. The practice phone is (717) 544-5511.
- Lancaster General Hospital555 North Duke Street, Lancaster, PA 17602 · Lancaster CountyPhone(717) 544-5511
Source: Dmand AI Affiliation Data
Dr. Ronald Trent Grenko is affiliated with 1 site of care and 2 medical groups
Dr. Grenko's primary practice is Lancaster General Hospital in Lancaster, Pennsylvania, part of University of Pennsylvania. The medical group on file is Penn Medicine Lancaster General Health. Dmand AI also links Dr. Grenko to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ronald Trent Grenko's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grenko practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lancaster General Hospital | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ronald Trent Grenko is one of 428 pathologists in Pennsylvania
Anatomic pathology and clinical pathology is Dr. Grenko's primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Grenko is licensed in Pennsylvania.
Specialties and state licenses
- Anatomic pathology and clinical pathology, PennsylvaniaPrimary
Pathologists near Dr. Grenko
Counts of pathologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ronald Trent Grenko billed Medicare for 1,836 services in 2024
CMS data shows 1,836 Medicare services from Dr. Grenko across 15 procedure codes in 2024, for 674 Medicare patients. Medicare paid $48,551 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Grenko's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 1,9772024: 1,8198%
- Other services
- 2023: 02024: 17
Dr. Grenko compared with the Pennsylvania median for pathologists, 2024
- Dr. Grenko
- Pennsylvania median
- Medicare services
- 1,836vs 1,30041% above
- Medicare patients
- 674vs 53925% above
Medians across 464 pathologists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Grenko's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Grenko?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Grenko and other pathologists in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ronald Trent Grenko treated 674 Medicare patients in 2024, average age 74
CMS counts 674 Medicare patients who saw Dr. Grenko in 2024. The largest group is 65 to 74, with 341 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.41, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Grenko's median patient age at 53, with 73% women.
Dr. Grenko's Medicare patients by age, 2024
Dr. Grenko's Medicare patients by sex, 2024
- Women38257%
- Men29243%
Chronic conditions among Dr. Grenko's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Cancer36%
- Ischemic heart disease32%
- Anxiety31%
- Chronic kidney disease31%
- Diabetes31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grenko's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women73%
- Men26%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Ronald Trent Grenko takes part in Medicare
Dr. Grenko accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ronald Trent Grenko received $278 in industry payments from 2016 to 2025
CMS Open Payments shows 10 general payments to Dr. Grenko from 3 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Alexion Pharmaceuticals, Inc. paid the most, $145.
General payments to Dr. Grenko by program year, 2016 to 2025
Companies that paid Dr. Grenko the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ronald Trent Grenko graduated from University of Cincinnati College of Medicine
Dr. Grenko graduated from University of Cincinnati College of Medicine in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ronald Trent Grenko's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Ronald Trent Grenko
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ronald Trent Grenko's NPI number?
Dr. Ronald Trent Grenko's NPI number is 1861454571. It was assigned on April 6, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ronald Trent Grenko?
Dr. Ronald Trent Grenko is a pathologist in Lancaster, Pennsylvania. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).
Where does Dr. Ronald Trent Grenko practice?
Dr. Grenko practices at 555 North Duke Street, Lancaster, PA 17602. Dr. Grenko's primary practice is Lancaster General Hospital in Lancaster, Pennsylvania, part of University of Pennsylvania. Dmand AI also links Dr. Grenko to 1 medical group.
What is Dr. Ronald Trent Grenko's office phone number?
The practice phone on file for Dr. Grenko is (717) 544-5511.
What is Dr. Ronald Trent Grenko's medical license number?
Dr. Grenko holds Pennsylvania license MD048891L.
Which hospitals is Dr. Ronald Trent Grenko affiliated with?
Dr. Grenko practices at Lancaster General Hospital in Lancaster, Pennsylvania.
What medical group is Dr. Ronald Trent Grenko part of?
Dr. Grenko is linked to Penn Medicine Lancaster General Health. Dmand AI links Dr. Grenko to 1 more medical group.
Does Dr. Ronald Trent Grenko accept Medicare?
Yes. CMS data shows Dr. Grenko billed Medicare for 1,836 services in 2024, and Dr. Grenko accepts Medicare assignment.
How many Medicare patients does Dr. Ronald Trent Grenko see?
CMS counts 674 Medicare patients who saw Dr. Grenko in 2024, with an average age of 74.
What services does Dr. Ronald Trent Grenko bill to Medicare?
In 2024, Dr. Grenko's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88341) and lab and pathology test (88311).
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Where did Dr. Ronald Trent Grenko go to medical school?
Dr. Grenko graduated from University of Cincinnati College of Medicine in 1985.
Has Dr. Ronald Trent Grenko received payments from drug or device companies?
CMS Open Payments shows $278 in general payments to Dr. Grenko from 3 companies from 2016 to 2025. The largest total came from Alexion Pharmaceuticals, Inc.
How long has Dr. Ronald Trent Grenko been practicing?
Dr. Grenko graduated from medical school in 1985, 41 years ago.
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