Dr. Frederick M. Fellin, MD
- Medicare services, 2024
- 624
- Medicare patients, 2024
- 294
- Part D claims, 2024
- 757
- Publications
- 13
- Clinical trials
- 4
- Practice address
- 111 South 11th Street, Philadelphia, PA 19107
- Practice phone
- Call (215) 955-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Fellin'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. Frederick M. Fellin is a hematologist and oncologist in Philadelphia, Pennsylvania
Dr. Fellin practices at Thomas Jefferson University Hospital in Philadelphia, Pennsylvania, part of Thomas Jefferson University.
Dr. Fellin's NPI, 1679684476, was assigned on August 31, 2006. Dr. Fellin graduated from Sidney Kimmel Medical College in 1979. Dr. Fellin holds Pennsylvania license MD025210E.
- NPI
- 1679684476NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5890811848
- NPI enumeration date
- August 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (215) 955-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 73
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Frederick M. Fellin practices at Thomas Jefferson University Hospital in Philadelphia, Pennsylvania
Dr. Fellin's primary practice is Thomas Jefferson University Hospital, at 111 South 11th Street, Philadelphia, PA 19107 in Philadelphia County. The practice phone is (215) 955-6000.
- Thomas Jefferson University Hospital111 South 11th Street, Philadelphia, PA 19107 · Philadelphia CountyPhone(215) 955-6000
Source: Dmand AI Affiliation Data
Dr. Frederick M. Fellin is affiliated with 6 sites of care and 3 medical groups
Dr. Fellin's primary practice is Thomas Jefferson University Hospital in Philadelphia, Pennsylvania, part of Thomas Jefferson University. Dr. Fellin is also affiliated with Jefferson Abington Hospital. The medical group on file is Jefferson University Physicians. Dmand AI also links Dr. Fellin to 2 more hospitals, 2 group practices and clinics and 2 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Frederick M. Fellin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fellin practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Thomas Jefferson University Hospital | Available with a free account |
| +5 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Thomas Jefferson University and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Frederick M. Fellin is one of 645 hematologists and oncologists in Pennsylvania
Hematology and oncology is Dr. Fellin's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Fellin is board certified in hematology by the American Board of Internal Medicine. Dmand AI has Dr. Fellin's licenses on file in 3 states: Pennsylvania, Delaware and New Jersey.
Specialties and state licenses
- Hematology and oncology, PennsylvaniaPrimary
- Delaware license
- New Jersey license
Clinical focus
Dmand AI lists breast cancer, chronic anemia, chronic embolism thrombosis, chronic leukemia, colorectal cancer, immune deficiency disease, lung cancer and lymphoma among the conditions Dr. Fellin treats.
Hematologists and oncologists near Dr. Fellin
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. Frederick M. Fellin billed Medicare for 624 services in 2024
CMS data shows 624 Medicare services from Dr. Fellin across 10 procedure codes in 2024, for 294 Medicare patients. Medicare paid $44,327 for them.
Dr. Fellin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6762024: 54819%
- Other services
- 2023: 02024: 76
Where Dr. Fellin's Medicare services took place, 2024
- In an office52684%
- In a facility9816%
Dr. Fellin compared with the Pennsylvania median for hematologists and oncologists, 2024
- Dr. Fellin
- Pennsylvania median
- Medicare services
- 624vs 654Close to median
- Medicare patients
- 294vs 22730% above
- Part D claims
- 588vs 39350% above
Medians across 600 hematologists and oncologists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Fellin'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. Fellin?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Fellin 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. Frederick M. Fellin treated 294 Medicare patients in 2024, average age 75
CMS counts 294 Medicare patients who saw Dr. Fellin in 2024. The largest group is 65 to 74, with 128 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.92, 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. Fellin's median patient age at 73, with 70% women.
Dr. Fellin's Medicare patients by age, 2024
Dr. Fellin's Medicare patients by sex, 2024
- Women19366%
- Men10134%
Chronic conditions among Dr. Fellin's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Cancer55%
- Arthritis51%
- Chronic kidney disease36%
- Ischemic heart disease32%
- Diabetes30%
- Anxiety28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Fellin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women70%
- Men29%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Frederick M. Fellin wrote 757 Medicare Part D claims in 2024
In 2024, Dr. Fellin wrote 757 Medicare Part D claims for 168 patients. 68% of them were for generic drugs. CMS names the drug for 588 of them, across 20 drugs with 11 or more claims each, at $3,164,350 in total drug cost. In 2023, CMS named 649 claims across 22 drugs.
Dr. Fellin's Part D claims by kind of drug, 2024
- Generic513 claims68%
- Brand-name244 claims32%
Dr. Fellin'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. Fellin's Part D claims, 2024
- Opioids6%45 of 757 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: 6492024: 5889%
Drugs named by CMS: 20 in 2024, 22 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. Frederick M. Fellin offers telehealth to Medicare patients
Dr. Fellin accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Fellin as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Frederick M. Fellin has 13 publications on record
Dmand AI links 13 papers to Dr. Fellin, published from 2018 to 2022. The most frequent topics are Breast Neoplasms, Liver and Rabbits. Dr. Fellin has published most often in J Biol Chem. Dr. Fellin's most frequent co-authors are Maysa M. Abu-Khalaf, MD, Rebecca Jaslow, MD and Saveri Bhattacharya, DO.
Dr. Fellin's papers by year, 2018 to 2022
Topics Dr. Fellin writes about most
- Breast Neoplasms
- Liver
- Rabbits
- Calcium
- Cost-Benefit Analysis
- Edetic Acid
- Fibrinogen
- Fibronectins
Dr. Fellin's most frequent co-authors
- Maysa M. Abu-Khalaf, MD3 shared papers
- Rebecca Jaslow, MD3 shared papers
- Saveri Bhattacharya, DO2 shared papers
Recent publications by Dr. Fellin
Breast Cancer Res Treat
See who Dr. Fellin researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Fellin 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. Frederick M. Fellin has worked on 4 clinical trials
Dmand AI links Dr. Fellin to 4 clinical trials, 2 of them phase 2 studies. Conditions studied include Breast Neoplasms, Breast Neoplasms, Male and Triple Negative Breast Neoplasms. Sidney Kimmel Cancer Center at Thomas Jefferson University sponsors the most, 2.
Clinical trials with Dr. Fellin by phase
- NonePhase 1: no trials
- 1Phase 1/2: 1 trial
- 2Phase 2: 2 trials
- NonePhase 3: no trials
- NonePhase 4: no trials
Conditions in Dr. Fellin's trials
- Breast Neoplasms
- Breast Neoplasms, Male
- Triple Negative Breast Neoplasms
- Inflammatory Breast Neoplasms
Investigators on the most trials with Dr. Fellin
- Massimo Cristofanilli, MD3 shared trials
- Avnish Bhatia, MD2 shared trials
- Isabelle Bedrosian, MD1 shared trial
Recent clinical trials with Dr. Fellin
Combination Immunotherapy With Herceptin and the HER2 Vaccine NeuVax (opens in a new tab)
Carboplatin and Combination Chemotherapy With or Without Veliparib in Treating Patients With Stage IIB-IIIC Breast Cancer (opens in a new tab)
Tumor Suppressor Status as a Predictor of Chemotherapy Response in Triple Negative Breast Cancer (opens in a new tab)
Romidepsin and Abraxane in Treating Patients With Metastatic Inflammatory Breast Cancer (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Frederick M. Fellin received $128 in industry payments from 2017 to 2023
CMS Open Payments shows 4 general payments to Dr. Fellin from 3 drug and device companies from 2017 to 2023. Food and beverage make up the largest share, 91% of the total. Kite Pharma, Inc. paid the most, $66.
General payments to Dr. Fellin by program year, 2017 to 2023
General payments to Dr. Fellin by kind, 2017 to 2023
- Food and beverage$11691%
- Education$129%
Companies that paid Dr. Fellin the most, 2017 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Frederick M. Fellin has 4 awards and honors on record
Dmand AI lists 4 awards for Dr. Fellin, most recently NCQA PCSP in 2017.
Awards and honors for Dr. Fellin
- 2017
- NCQA PCSP
- 2014
- Super Doc
- Undated
- Checkbook Top Doc
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Frederick M. Fellin graduated from Sidney Kimmel Medical College
Dr. Fellin graduated from Sidney Kimmel Medical College in 1979. Dr. Fellin is a member of ACP, AMA, ASCO and ASH.
- Medical school
- Board certified in hematology
- Board certified in internal medicine
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Dr. Frederick M. Fellin accepts plans from 15 insurance carriers
Dr. Fellin is in network with 15 carriers, including Aetna, Highmark and United Healthcare. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Highmark
- United Healthcare
- Cigna
- Horizon Blue Cross Blue Shield of New Jersey
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Humana
- +7 more carriersWith a free account
Plan types Dr. Fellin accepts, by number of carriers
- Medicare11
- PPO9
- HMO7
- POS3
- EPO2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Frederick M. Fellin'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) |
| 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Frederick M. Fellin
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. Frederick M. Fellin's NPI number?
Dr. Frederick M. Fellin's NPI number is 1679684476. It was assigned on August 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Frederick M. Fellin?
Dr. Frederick M. Fellin 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. Frederick M. Fellin practice?
Dr. Fellin practices at 111 South 11th Street, Philadelphia, PA 19107. Dr. Fellin's primary practice is Thomas Jefferson University Hospital in Philadelphia, Pennsylvania, part of Thomas Jefferson University. Dmand AI also links Dr. Fellin to 2 hospitals, 2 group practices and clinics and 2 medical groups.
What is Dr. Frederick M. Fellin's office phone number?
The practice phone on file for Dr. Fellin is (215) 955-6000.
What is Dr. Frederick M. Fellin's medical license number?
Dr. Fellin holds Pennsylvania license MD025210E, one of the licenses on file in 3 states.
Which states has Dr. Frederick M. Fellin been licensed in?
Dmand AI has state licenses on file for Dr. Fellin in Pennsylvania (1981 to 2026), Delaware (2017 to 2025) and New Jersey (2017 to 2023).
Which hospitals is Dr. Frederick M. Fellin affiliated with?
Dr. Fellin practices at Thomas Jefferson University Hospital in Philadelphia, Pennsylvania. Dr. Fellin is also affiliated with Jefferson Abington Hospital. Dmand AI links Dr. Fellin to 2 more hospitals.
What medical group is Dr. Frederick M. Fellin part of?
Dr. Fellin is linked to Jefferson University Physicians. Dmand AI links Dr. Fellin to 2 more medical groups.
Does Dr. Frederick M. Fellin accept Medicare?
Yes. CMS data shows Dr. Fellin billed Medicare for 624 services in 2024, and Dr. Fellin accepts Medicare assignment.
Does Dr. Frederick M. Fellin offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Fellin as offering telehealth services.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. Frederick M. Fellin see?
CMS counts 294 Medicare patients who saw Dr. Fellin in 2024, with an average age of 75.
Is Dr. Frederick M. Fellin board certified?
Yes. Dr. Fellin is board certified in hematology by the American Board of Internal Medicine.
What services does Dr. Frederick M. Fellin bill to Medicare?
In 2024, Dr. Fellin's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99215) and office visit, established patient (99213).
Where did Dr. Frederick M. Fellin go to medical school?
Dr. Fellin graduated from Sidney Kimmel Medical College in 1979.
What drugs does Dr. Frederick M. Fellin prescribe most?
In 2024 Medicare Part D data, Dr. Fellin's most prescribed drugs by claims were Anastrozole, Ibrance and Tamoxifen Citrate.
Has Dr. Frederick M. Fellin received payments from drug or device companies?
CMS Open Payments shows $128 in general payments to Dr. Fellin from 3 companies from 2017 to 2023. The largest total came from Kite Pharma, Inc.
How long has Dr. Frederick M. Fellin been practicing?
Dr. Fellin graduated from medical school in 1979, 47 years ago.
Does Dr. Frederick M. Fellin do research?
Dmand AI links 13 publications to Dr. Fellin, published from 2018 to 2022. Dr. Fellin has worked on 4 clinical trials.
Who does Dr. Frederick M. Fellin publish with?
Dr. Fellin's most frequent co-authors are Maysa M. Abu-Khalaf, MD (3 shared papers), Rebecca Jaslow, MD (3 shared papers) and Saveri Bhattacharya, DO (2 shared papers).
What insurance does Dr. Frederick M. Fellin accept?
Dr. Fellin is in network with 15 carriers, including Aetna, Highmark and United Healthcare. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.
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