Breast DensityBreast NeoplasmsEarly Detection of Cancer
Dr. Lina Marie Sizer, DO
NPI1457645228PAC ID2365707601
- Medicare services, 2024
- 368
- Medicare patients, 2024
- 205
- Part D claims, 2024
- 21
- Publications
- 4
- Hospital affiliations
- 4
- Practice address
- 130 South Bryn Mawr Ave, Bryn Mawr, PA 19010
- Practice phone
- Call (610) 526-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Sizer'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. Lina Marie Sizer is a general surgeon in Bryn Mawr, Pennsylvania
Dr. Sizer practices at Bryn Mawr Hospital in Bryn Mawr, Pennsylvania, part of Main Line Health System.
Dr. Sizer's NPI, 1457645228, was assigned on June 8, 2011. Dr. Sizer graduated from Philadelphia College of Osteopathic Medicine in 2011. Dr. Sizer holds Pennsylvania license OS016923.
NPI and contact details
- NPI
- 1457645228NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2365707601
- NPI enumeration date
- June 8, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (610) 526-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Lina Marie Sizer practices at Bryn Mawr Hospital in Bryn Mawr, Pennsylvania
Dr. Sizer's primary practice is Bryn Mawr Hospital, at 130 South Bryn Mawr Ave, Bryn Mawr, PA 19010 in Montgomery County. The practice phone is (610) 526-3000.
- Bryn Mawr Hospital130 South Bryn Mawr Ave, Bryn Mawr, PA 19010 · Montgomery CountyPhone(610) 526-3000
Source: Dmand AI Affiliation Data
Dr. Lina Marie Sizer is affiliated with 7 sites of care and 2 medical groups
Dr. Sizer's primary practice is Bryn Mawr Hospital in Bryn Mawr, Pennsylvania, part of Main Line Health System. Dr. Sizer is also affiliated with Lankenau Medical Center. The medical group on file is Main Line Health. Dmand AI also links Dr. Sizer to 2 more hospitals, 2 group practices and clinics, 1 home health agency and 1 medical group, each named with a free account.
Lankenau Medical CenterMain Line Health2 hospitalsNames with a free account2 group practices and clinicsNames with a free account1 home health agencyName with a free account1 medical groupName with a free account
See all 9 affiliations for Dr. SizerSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Lina Marie Sizer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sizer practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Bryn Mawr Hospital | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Lina Marie Sizer is one of 1,398 general surgeons in Pennsylvania
Surgery is Dr. Sizer's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Sizer is licensed in Pennsylvania.
Specialties and state licenses
- Surgery, PennsylvaniaPrimary
General surgeons near Dr. Sizer
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
1,398general surgeons in Pennsylvania11general surgeons in Bryn Mawr8general surgeons at Bryn Mawr Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Lina Marie Sizer billed Medicare for 368 services in 2024
CMS data shows 368 Medicare services from Dr. Sizer across 8 procedure codes in 2024, for 205 Medicare patients. Medicare paid $56,883 for them.
Medicare services, 2024368
Medicare patients205
Paid by Medicare$56,883
Procedure codes8
Dr. Sizer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2452024: 27914%
- Surgery
- 2023: 792024: 8913%
Where Dr. Sizer's Medicare services took place, 2024
- In an office27976%
- In a facility8924%
Dr. Sizer compared with the Pennsylvania median for general surgeons, 2024
- Dr. Sizer
- Pennsylvania median
- Medicare services
- 368vs 1582.3 times
- Medicare patients
- 205vs 12761% above
- Part D claims
- 13vs 2955% below
Medians across 1,213 general surgeons in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Sizer'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. Sizer?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Sizer and other general surgeons in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Lina Marie Sizer treated 205 Medicare patients in 2024, average age 74
CMS counts 205 Medicare patients who saw Dr. Sizer in 2024. The largest group is 65 to 74, with 106 patients. 75% of them have cancer, and 75% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.10, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Sizer's median patient age at 62, with 98% women.
Medicare patients, 2024205
Average age74
Average risk score1.10
Also on Medicaid9%
Dr. Sizer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Sizer's Medicare patients, 2024
- Cancer75%
- High cholesterol75%
- High blood pressure68%
- Arthritis48%
- Anxiety28%
- Osteoporosis27%
- Ischemic heart disease23%
- Diabetes19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Sizer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women98%
- Men0%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Lina Marie Sizer wrote 21 Medicare Part D claims in 2024
In 2024, Dr. Sizer wrote 21 Medicare Part D claims for 16 patients. 95% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $280 in total drug cost.
Part D claims, 202421
Drugs named by CMS1
Total drug cost$280
Part D patients16
Dr. Sizer's Part D claims by kind of drug, 2024
- Generic20 claims95%
- Brand-name and other1 claims5%
Dr. Sizer's most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
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. Lina Marie Sizer ranks in the 99th percentile for mastectomy in Medicare
Dr. Sizer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 96 procedures of mastectomy by Dr. Sizer, more than 99% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Sizer ranks in Medicare procedure volume
- Mastectomy
- 99th percentile96 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Lina Marie Sizer has 4 publications on record
Dmand AI links 4 papers to Dr. Sizer, published from 2021 to 2022. 2021 was the busiest year, with 3. The most frequent topics are Breast Neoplasms, COVID-19 and Perception. Dr. Sizer has published most often in Ann Surg Oncol. Dr. Sizer's most frequent co-authors are Thomas Gibson Frazier, MD, Ned Z. Carp, MD and Catherine Douglas Carruthers, MD.
Papers4
Years published2021 to 2022
Topics Dr. Sizer writes about most
- Breast Neoplasms
- COVID-19
- Perception
- SARS-CoV-2
Dr. Sizer's most frequent co-authors
- Thomas Gibson Frazier, MD4 shared papers
- Ned Z. Carp, MD3 shared papers
- Catherine Douglas Carruthers, MD1 shared paper
Recent publications by Dr. Sizer
AnxietyCOVID-19Pandemics
BreastBreast DiseasesBreast Neoplasms
Breast Cancer Res Treat
Breast NeoplasmsMetabolic SyndromeTriple Negative Breast Neoplasms
See who Dr. Sizer researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Sizer works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Lina Marie Sizer received $3,115 in industry payments from 2016 to 2025
CMS Open Payments shows 57 general payments to Dr. Sizer from 22 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 85% of the total. Stryker Corporation paid the most, $853.
General payments to Dr. Sizer by program year, 2016 to 2025
General payments to Dr. Sizer by kind, 2016 to 2025
$3.1Kin total
- Food and beverage$2,64385%
- Travel and lodging$47215%
Companies that paid Dr. Sizer 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. Lina Marie Sizer graduated from Philadelphia College of Osteopathic Medicine
Dr. Sizer graduated from Philadelphia College of Osteopathic Medicine in 2011.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Lina Marie Sizer'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)Doctors and Clinicians Utilization Data (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 |
| 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. Lina Marie Sizer
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. Lina Marie Sizer's NPI number?
Dr. Lina Marie Sizer's NPI number is 1457645228. It was assigned on June 8, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Lina Marie Sizer?
Dr. Lina Marie Sizer is a general surgeon in Bryn Mawr, Pennsylvania. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Lina Marie Sizer practice?
Dr. Sizer practices at 130 South Bryn Mawr Ave, Bryn Mawr, PA 19010. Dr. Sizer's primary practice is Bryn Mawr Hospital in Bryn Mawr, Pennsylvania, part of Main Line Health System. Dmand AI also links Dr. Sizer to 2 hospitals, 2 group practices and clinics, 1 home health agency and 1 medical group.
What is Dr. Lina Marie Sizer's office phone number?
The practice phone on file for Dr. Sizer is (610) 526-3000.
What is Dr. Lina Marie Sizer's medical license number?
Dr. Sizer holds Pennsylvania license OS016923.
Which hospitals is Dr. Lina Marie Sizer affiliated with?
Dr. Sizer practices at Bryn Mawr Hospital in Bryn Mawr, Pennsylvania. Dr. Sizer is also affiliated with Lankenau Medical Center. Dmand AI links Dr. Sizer to 2 more hospitals.
What medical group is Dr. Lina Marie Sizer part of?
Dr. Sizer is linked to Main Line Health. Dmand AI links Dr. Sizer to 1 more medical group.
Does Dr. Lina Marie Sizer accept Medicare?
Yes. CMS data shows Dr. Sizer billed Medicare for 368 services in 2024, and Dr. Sizer accepts Medicare assignment.
How many Medicare patients does Dr. Lina Marie Sizer see?
CMS counts 205 Medicare patients who saw Dr. Sizer in 2024, with an average age of 74.
What services does Dr. Lina Marie Sizer bill to Medicare?
In 2024, Dr. Sizer's most billed Medicare services were office visit, established patient (99213), surgery: skin and soft tissue (19301) and office visit, established patient (99215).
Show 6 more questionsShow fewer questions
Where did Dr. Lina Marie Sizer go to medical school?
Dr. Sizer graduated from Philadelphia College of Osteopathic Medicine in 2011.
What drugs does Dr. Lina Marie Sizer prescribe most?
In 2021 Medicare Part D data, Dr. Sizer's most prescribed drugs by claims were Letrozole.
Has Dr. Lina Marie Sizer received payments from drug or device companies?
CMS Open Payments shows $3,115 in general payments to Dr. Sizer from 22 companies from 2016 to 2025. The largest total came from Stryker Corporation.
How long has Dr. Lina Marie Sizer been practicing?
Dr. Sizer graduated from medical school in 2011, 15 years ago.
Does Dr. Lina Marie Sizer do research?
Dmand AI links 4 publications to Dr. Sizer, published from 2021 to 2022.
Who does Dr. Lina Marie Sizer publish with?
Dr. Sizer's most frequent co-authors are Thomas Gibson Frazier, MD (4 shared papers), Ned Z. Carp, MD (3 shared papers) and Catherine Douglas Carruthers, MD (1 shared paper).
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