Cancer Biol Ther
Dr. William J. Tester, MD
- Medicare services, 2024
- 303
- Medicare patients, 2024
- 128
- Part D claims, 2024
- 564
- Publications
- 23
- Clinical trials
- 4
- Practice address
- 925 Chestnut Street, Philadelphia, PA 19107
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Jefferson Health Otolaryngology Head and Neck Surgery - HOPD
Acute Care Hospital outpatient department · Philadelphia, Pennsylvania
Find Dr. Tester's professional email, personal email and mobile number
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Dr. William J. Tester is a hematologist and oncologist in Philadelphia, Pennsylvania
Dr. Tester practices at Jefferson Health Otolaryngology Head and Neck Surgery - HOPD in Philadelphia, Pennsylvania.
Dr. Tester's NPI, 1386613693, was assigned on March 17, 2006. Dr. Tester graduated from Hahnemann University College of Medicine in 1972. Dr. Tester holds Pennsylvania license MD021791E.
- NPI
- 1386613693NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5496931396
- NPI enumeration date
- March 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 80
- Medical school graduation
- 1972
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William J. Tester practices at Jefferson Health Otolaryngology Head and Neck Surgery - HOPD in Philadelphia, Pennsylvania
Dr. Tester's primary practice is Jefferson Health Otolaryngology Head and Neck Surgery - HOPD, at 925 Chestnut Street, Philadelphia, PA 19107.
- Jefferson Health Otolaryngology Head and Neck Surgery - HOPD925 Chestnut Street, Philadelphia, PA 19107
Source: Dmand AI Affiliation Data
Dr. William J. Tester is affiliated with 5 sites of care and 2 medical groups
Dr. Tester's primary practice is Jefferson Health Otolaryngology Head and Neck Surgery - HOPD in Philadelphia, Pennsylvania. Dr. Tester is also affiliated with Thomas Jefferson University Hospital. The medical group on file is Jefferson University Physicians. Dmand AI also links Dr. Tester to 1 more hospital, 1 group practice or clinic, 1 hospital outpatient department and 1 medical group, each named with a free account. Dr. Tester's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. William J. Tester's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tester practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Jefferson Health Otolaryngology Head and Neck Surgery - HOPD | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William J. Tester is one of 645 hematologists and oncologists in Pennsylvania
Hematology and oncology is Dr. Tester's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Tester is licensed in Pennsylvania.
Specialties and state licenses
- Hematology and oncology, PennsylvaniaPrimary
Hematologists and oncologists near Dr. Tester
Counts of hematologists and oncologists 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 J. Tester billed Medicare for 303 services in 2024
CMS data shows 303 Medicare services from Dr. Tester across 5 procedure codes in 2024, for 128 Medicare patients. Medicare paid $28,368 for them.
Dr. Tester's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3642024: 27923%
- Other services
- 2023: 02024: 24
Where Dr. Tester's Medicare services took place, 2024
- In an office176%
- In a facility28694%
Dr. Tester compared with the Pennsylvania median for hematologists and oncologists, 2024
- Dr. Tester
- Pennsylvania median
- Medicare services
- 303vs 65454% below
- Medicare patients
- 128vs 22744% below
- Part D claims
- 430vs 3939% above
Medians across 600 hematologists and oncologists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Tester'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tester and other hematologists and oncologists in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William J. Tester treated 128 Medicare patients in 2024, average age 73
CMS counts 128 Medicare patients who saw Dr. Tester in 2024. The largest group is 65 to 74, with 67 patients. 75% of them have cancer, and 75% have high blood pressure. 18% are also on Medicaid. Their average risk score is 2.18, 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. Tester's median patient age at 71, with 24% women.
Dr. Tester's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Tester's Medicare patients by sex, 2024
- Women3527%
- Men9373%
Chronic conditions among Dr. Tester's Medicare patients, 2024
- Cancer75%
- High blood pressure75%
- High cholesterol71%
- Arthritis41%
- Diabetes32%
- Chronic kidney disease30%
- Ischemic heart disease30%
- Anxiety23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tester's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women24%
- Men75%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William J. Tester wrote 564 Medicare Part D claims in 2024
In 2024, Dr. Tester wrote 564 Medicare Part D claims for 66 patients. 69% of them were for generic drugs. CMS names the drug for 430 of them, across 13 drugs with 11 or more claims each, at $1,680,519 in total drug cost. In 2023, CMS named 442 claims across 15 drugs.
Dr. Tester's Part D claims by kind of drug, 2024
- Generic387 claims69%
- Brand-name and other177 claims31%
Dr. Tester'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. Tester's Part D claims, 2024
- Opioids6%34 of 564 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: 4422024: 4303%
Drugs named by CMS: 13 in 2024, 15 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 J. Tester offers telehealth to Medicare patients
Dr. Tester accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Tester as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. William J. Tester has 23 publications on record
Dmand AI links 23 papers to Dr. Tester, published from 2006 to 2024. 2013 was the busiest year, with 3. The most frequent topics are Urinary Bladder Neoplasms, Biomarkers, Tumor and Antigens, Neoplasm. Dr. Tester has published most often in Can J Urol. Dr. Tester's most frequent co-authors are Jongoh Kim, MD, John Charles Leighton, MD and Patrick Johnston Mille, MD.
Dr. Tester's papers by year, 2012 to 2024
Topics Dr. Tester writes about most
- Urinary Bladder Neoplasms
- Biomarkers, Tumor
- Antigens, Neoplasm
- Antineoplastic Agents
- Antineoplastic Combined Chemotherapy Protocols
- Chemotherapy, Adjuvant
- Clinical Trials, Phase III as Topic
- Colorectal Neoplasms
Dr. Tester's most frequent co-authors
- Jongoh Kim, MD3 shared papers
- John Charles Leighton, MD3 shared papers
- Patrick Johnston Mille, MD3 shared papers
Recent publications by Dr. Tester
Prostate Cancer Prostatic Dis
J Thorac Oncol
See who Dr. Tester researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tester works with, so you can find a warm path to the right hematologists and oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. William J. Tester has worked on 4 clinical trials
Dmand AI links Dr. Tester to 4 clinical trials, 3 of them phase 3 studies. 4 are still active or recruiting. Conditions studied include Carcinoma, Non-Small-Cell Lung, Carcinoma, Bronchogenic and Ureteral Neoplasms. National Cancer Institute (NCI) sponsors the most, 3.
Conditions in Dr. Tester's trials
- Carcinoma, Non-Small-Cell Lung
- Carcinoma, Bronchogenic
- Ureteral Neoplasms
- Ureteral Diseases
Investigators on the most trials with Dr. Tester
- Thomas J. Spillane, MD4 shared trials
- Ghulam Abbas, MD3 shared trials
- Sheetal Sumat Acharya, MD3 shared trials
Recent clinical trials with Dr. Tester
Testing MK-3475 (Pembrolizumab) After Surgery for Localized Muscle-Invasive Bladder Cancer and Locally Advanced Urothelial Cancer (opens in a new tab)
Erlotinib Hydrochloride in Treating Patients With Stage IB-IIIA Non-small Cell Lung Cancer That Has Been Completely Removed by Surgery (An ALCHEMIST Treatment Trial) (opens in a new tab)
Genetic Testing in Screening Patients With Stage IB-IIIA Non-small Cell Lung Cancer That Has Been or Will Be Removed by Surgery (The ALCHEMIST Screening Trial) (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. William J. Tester received $5,329 in industry payments from 2016 to 2024
CMS Open Payments shows 23 general payments to Dr. Tester from 11 drug and device companies from 2016 to 2024. Consulting fees make up the largest share, 54% of the total. Janssen Pharmaceuticals, Inc paid the most, $4,312.
General payments to Dr. Tester by program year, 2016 to 2024
General payments to Dr. Tester by kind, 2016 to 2024
- Consulting fees$2,87854%
- Travel and lodging$1,42627%
- Food and beverage$91917%
- Education$1062%
Companies that paid Dr. Tester the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William J. Tester graduated from Hahnemann University College of Medicine
Dr. Tester graduated from Hahnemann University College of Medicine in 1972.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William J. Tester'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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (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. William J. Tester
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 J. Tester's NPI number?
Dr. William J. Tester's NPI number is 1386613693. It was assigned on March 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William J. Tester?
Dr. William J. Tester is a hematologist and oncologist in Philadelphia, Pennsylvania. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. William J. Tester practice?
Dr. Tester practices at 925 Chestnut Street, Philadelphia, PA 19107. Dr. Tester's primary practice is Jefferson Health Otolaryngology Head and Neck Surgery - HOPD in Philadelphia, Pennsylvania. Dmand AI also links Dr. Tester to 1 hospital, 1 group practice or clinic, 1 hospital outpatient department and 1 medical group.
What is Dr. William J. Tester's medical license number?
Dr. Tester holds Pennsylvania license MD021791E.
Which hospitals is Dr. William J. Tester affiliated with?
Dr. Tester is affiliated with Thomas Jefferson University Hospital. Dmand AI links Dr. Tester to 1 more hospital.
What medical group is Dr. William J. Tester part of?
Dr. Tester is linked to Jefferson University Physicians. Dmand AI links Dr. Tester to 1 more medical group.
Does Dr. William J. Tester accept Medicare?
Yes. CMS data shows Dr. Tester billed Medicare for 303 services in 2024, and Dr. Tester accepts Medicare assignment.
Does Dr. William J. Tester offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Tester as offering telehealth services.
How many Medicare patients does Dr. William J. Tester see?
CMS counts 128 Medicare patients who saw Dr. Tester in 2024, with an average age of 73.
What services does Dr. William J. Tester bill to Medicare?
In 2024, Dr. Tester's most billed Medicare services were office visit, established patient (99215), office visit, established patient (99214) and office visit, new patient (99205).
Show 6 more questionsShow fewer questions
Where did Dr. William J. Tester go to medical school?
Dr. Tester graduated from Hahnemann University College of Medicine in 1972.
What drugs does Dr. William J. Tester prescribe most?
In 2024 Medicare Part D data, Dr. Tester's most prescribed drugs by claims were Prednisone, Abiraterone Acetate and Orgovyx.
Has Dr. William J. Tester received payments from drug or device companies?
CMS Open Payments shows $5,329 in general payments to Dr. Tester from 11 companies from 2016 to 2024. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. William J. Tester been practicing?
Dr. Tester graduated from medical school in 1972, 54 years ago.
Does Dr. William J. Tester do research?
Dmand AI links 23 publications to Dr. Tester, published from 2006 to 2024. Dr. Tester has worked on 4 clinical trials.
Who does Dr. William J. Tester publish with?
Dr. Tester's most frequent co-authors are Jongoh Kim, MD (3 shared papers), John Charles Leighton, MD (3 shared papers) and Patrick Johnston Mille, MD (3 shared papers).
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