Dr. William D. Loretan, DO
- Medicare services, 2024
- 2,876
- Medicare patients, 2024
- 760
- Part D claims, 2024
- 25,904
- Hospital affiliations
- 4
- Industry payments
- $139
- Practice address
- 3421 Concord Rd, York, PA 17402
- Practice phone
- Call (717) 733-6546
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Wellspan Internal Medicine - Ephrata
York, Pennsylvania
Find Dr. Loretan's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. William D. Loretan is an internist in York, Pennsylvania
Dr. Loretan practices at Wellspan Internal Medicine - Ephrata in York, Pennsylvania.
Dr. Loretan's NPI, 1245244565, was assigned on July 29, 2006. Dr. Loretan holds Pennsylvania license OS007344E.
- NPI
- 1245244565NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2567491814
- NPI enumeration date
- July 29, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (717) 733-6546
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William D. Loretan practices at Wellspan Internal Medicine - Ephrata in York, Pennsylvania
Dr. Loretan's primary practice is Wellspan Internal Medicine - Ephrata, at 3421 Concord Rd, York, PA 17402 in York County. The practice phone is (717) 733-6546.
- Wellspan Internal Medicine - Ephrata3421 Concord Rd, York, PA 17402 · York CountyPhone(717) 733-6546
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William D. Loretan is affiliated with 20 sites of care and 3 medical groups
Dr. Loretan's primary practice is Wellspan Internal Medicine - Ephrata in York, Pennsylvania. Dr. Loretan is also affiliated with WellSpan York Hospital. The medical group on file is WellSpan Digestive Health. Dmand AI also links Dr. Loretan to 3 more hospitals, 5 home health agencies, 4 hospices, 4 skilled nursing facilities, 2 group practices and clinics and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William D. Loretan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Loretan practices, 19 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Wellspan Internal Medicine - Ephrata | Available with a free account |
| +19 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William D. Loretan is one of 5,665 internists in Pennsylvania
Internal medicine is Dr. Loretan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Loretan is licensed in Pennsylvania.
Specialties and state licenses
- Internal medicine, PennsylvaniaPrimary
Internists near Dr. Loretan
Counts of internists 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. William D. Loretan billed Medicare for 2,876 services in 2024
CMS data shows 2,876 Medicare services from Dr. Loretan across 22 procedure codes in 2024, for 760 Medicare patients. Medicare paid $223,294 for them. Every service was in an office.
Dr. Loretan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,8832024: 1,9081%
- Other services
- 2023: 4182024: 51022%
- Tests and treatments
- 2023: 2192024: 33051%
- Lab and pathology
- 2023: 592024: 6612%
- Drugs given in the office
- 2023: 1,4692024: 3698%
- Surgery
- 2023: 232024: 2613%
Dr. Loretan compared with the Pennsylvania median for internists, 2024
- Dr. Loretan
- Pennsylvania median
- Medicare services
- 2,876vs 4176.9 times
- Medicare patients
- 760vs 1854.1 times
- Part D claims
- 24,967vs 224111.5 times
Medians across 5,518 internists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Loretan'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. Loretan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Loretan and other internists in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William D. Loretan treated 760 Medicare patients in 2024, average age 82
CMS counts 760 Medicare patients who saw Dr. Loretan in 2024. The largest group is 85 and over, with 323 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 14% are also on Medicaid. Their average risk score is 1.52, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Loretan's median patient age at 81, with 57% women.
Dr. Loretan's Medicare patients by age, 2024
Dr. Loretan's Medicare patients by sex, 2024
- Women42856%
- Men33244%
Chronic conditions among Dr. Loretan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Ischemic heart disease38%
- Anxiety35%
- Chronic kidney disease35%
- Mood disorders34%
- Depression33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Loretan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 81
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William D. Loretan wrote 25,904 Medicare Part D claims in 2024
In 2024, Dr. Loretan wrote 25,904 Medicare Part D claims for 1,223 patients. 87% of them were for generic drugs. CMS names the drug for 24,967 of them, across 240 drugs with 11 or more claims each, at $1,614,753 in total drug cost. In 2023, CMS named 25,465 claims across 243 drugs.
Dr. Loretan's Part D claims by kind of drug, 2024
- Generic22,500 claims87%
- Brand-name3,081 claims12%
- Other323 claims1%
Dr. Loretan's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Loretan's Part D claims, 2024
- Opioids1%336 of 25,904 claims
- Antibiotics2%493 of 25,904 claims
- Antipsychotics, patients 65 and over1%250 of 25,904 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 25,4652024: 24,9672%
Drugs named by CMS: 240 in 2024, 243 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. William D. Loretan offers telehealth to Medicare patients
Dr. Loretan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Loretan as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. William D. Loretan received $139 in industry payments from 2018 to 2021
CMS Open Payments shows 2 general payments to Dr. Loretan from 2 drug and device companies from 2018 to 2021. Food and beverage make up the largest share, 90% of the total. Valeritas, Inc. paid the most, $125.
General payments to Dr. Loretan by program year, 2018 to 2021
General payments to Dr. Loretan by kind, 2018 to 2021
- Food and beverage$12590%
- Education$1410%
Companies that paid Dr. Loretan the most, 2018 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. William D. Loretan'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - 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) |
| 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. William D. Loretan
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. William D. Loretan's NPI number?
Dr. William D. Loretan's NPI number is 1245244565. It was assigned on July 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William D. Loretan?
Dr. William D. Loretan is an internist in York, Pennsylvania. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. William D. Loretan practice?
Dr. Loretan practices at 3421 Concord Rd, York, PA 17402. Dr. Loretan's primary practice is Wellspan Internal Medicine - Ephrata in York, Pennsylvania. Dmand AI also links Dr. Loretan to 3 hospitals, 5 home health agencies, 4 hospices, 4 skilled nursing facilities, 2 group practices and clinics and 2 medical groups.
What is Dr. William D. Loretan's office phone number?
The practice phone on file for Dr. Loretan is (717) 733-6546.
What is Dr. William D. Loretan's medical license number?
Dr. Loretan holds Pennsylvania license OS007344E.
Which hospitals is Dr. William D. Loretan affiliated with?
Dr. Loretan is affiliated with WellSpan York Hospital. Dmand AI links Dr. Loretan to 3 more hospitals.
What medical group is Dr. William D. Loretan part of?
Dr. Loretan is linked to WellSpan Digestive Health. Dmand AI links Dr. Loretan to 2 more medical groups.
Does Dr. William D. Loretan accept Medicare?
Yes. CMS data shows Dr. Loretan billed Medicare for 2,876 services in 2024, and Dr. Loretan accepts Medicare assignment.
Does Dr. William D. Loretan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Loretan as offering telehealth services.
How many Medicare patients does Dr. William D. Loretan see?
CMS counts 760 Medicare patients who saw Dr. Loretan in 2024, with an average age of 82.
Show 4 more questionsShow fewer questions
What services does Dr. William D. Loretan bill to Medicare?
In 2024, Dr. Loretan's most billed Medicare services were office visit, established patient (99214), nursing facility care (99309) and medicare service (G0439).
What drugs does Dr. William D. Loretan prescribe most?
In 2024 Medicare Part D data, Dr. Loretan's most prescribed drugs by claims were Amlodipine Besylate, Levothyroxine Sodium and Atorvastatin Calcium.
Has Dr. William D. Loretan received payments from drug or device companies?
CMS Open Payments shows $139 in general payments to Dr. Loretan from 2 companies from 2018 to 2021. The largest total came from Valeritas, Inc.
How long has Dr. William D. Loretan been practicing?
Dr. Loretan graduated from medical school in 1989, 37 years ago.
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