Dr. Thomas J. Blumenfeld, MD
- Medicare services, 2022
- 579
- Part D claims, 2020
- 94
- Publications
- 25
- Industry payments
- $131,824
- Affiliated sites
- 1
- Practice address
- 2801 K St Suite 310 Suite 310, Sacramento, CA 95816-5119
- Practice phone
- Call (916) 389-7976
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Sacramento Knee & Sports Medicine - Sacramento (K St)
Surgical practice · Sacramento, California
Find Dr. Blumenfeld's professional email, personal email and mobile number
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Dr. Thomas J. Blumenfeld is an orthopedic surgeon in Stanford, California
Dr. Blumenfeld practices at Sacramento Knee & Sports Medicine - Sacramento (K St) in Sacramento, California.
Dr. Blumenfeld's NPI, 1962479089, was assigned on March 7, 2006. Dr. Blumenfeld graduated from Tufts University School Of Medicine in 1990. Dr. Blumenfeld holds California license G75858.
- NPI
- 1962479089NPI Registry (opens in a new tab)
- NPI enumeration date
- March 7, 2006
- NPI status
- Active
- Practice phone
- (916) 389-7976
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas J. Blumenfeld practices in Sacramento and Stanford
Dr. Blumenfeld's primary practice is Sacramento Knee & Sports Medicine - Sacramento (K St), at 2801 K St Suite 310 Suite 310, Sacramento, CA 95816-5119. The practice phone is (916) 389-7976. The NPI Registry lists Dr. Blumenfeld's practice address as 300 Pasteur Dr, Stanford, CA 94305.
- Sacramento Knee & Sports Medicine - Sacramento (K St)Primary2801 K St Suite 310 Suite 310, Sacramento, CA 95816-5119Phone(916) 389-7976
- NPI Registry address300 Pasteur Dr, Stanford, CA 94305 · Santa Clara CountyPhone(925) 272-2860
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Thomas J. Blumenfeld is affiliated with 1 site of care and 1 medical group
Dr. Blumenfeld's primary practice is Sacramento Knee & Sports Medicine - Sacramento (K St) in Sacramento, California. The medical group on file is Orthopedic Specialists of Sacramento.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Thomas J. Blumenfeld's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Blumenfeld practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sacramento Knee & Sports Medicine - Sacramento (K St) | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas J. Blumenfeld is one of 2,056 orthopedic surgeons in California
Orthopaedic surgery is Dr. Blumenfeld's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Blumenfeld is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery. Dr. Blumenfeld is licensed in California.
Specialties and state licenses
- Orthopaedic surgery, CaliforniaPrimary
Orthopedic surgeons near Dr. Blumenfeld
Counts of orthopedic surgeons 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. Thomas J. Blumenfeld billed Medicare for 579 services in 2022
CMS data shows 579 Medicare services from Dr. Blumenfeld across 10 procedure codes in 2022. Medicare paid $81,156 for them.
Dr. Blumenfeld's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 3912022: 391No change
- Drugs given in the office
- 2021: 682022: 726%
- Surgery
- 2021: 702022: 657%
- Other services
- 2021: 392022: 5131%
Where Dr. Blumenfeld's Medicare services took place, 2022
- In an office53993%
- In a facility407%
Dr. Blumenfeld compared with the California median for orthopedic surgeons, 2022
- Dr. Blumenfeld
- California median
- Medicare services
- 579vs 68315% below
- Part D claims
- 94vs 7034% above
Medians across 1,844 orthopedic surgeons in California with Dmand AI profiles that report each measure.
Dr. Blumenfeld's most billed Medicare procedure codes, 2022
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. Blumenfeld?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Blumenfeld and other orthopedic surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas J. Blumenfeld's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. Blumenfeld's median patient age at 71, with 78% women.
Dr. Blumenfeld'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
- Women78%
- Men22%
Source: Dmand AI Patient Panel Data
Dr. Thomas J. Blumenfeld wrote 94 Medicare Part D claims in 2020
In 2020, Dr. Blumenfeld wrote 94 Medicare Part D claims. They cover 3 drugs, with $686 in total drug cost. In 2019, CMS named 266 claims across 6 drugs.
Dr. Blumenfeld's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 2662020: 9465%
Drugs named by CMS: 3 in 2020, 6 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Thomas J. Blumenfeld has 25 publications on record
Dmand AI links 25 papers to Dr. Blumenfeld, published from 2009 to 2023. 2011 was the busiest year, with 3. The most frequent topics are Hip Prosthesis, Prosthesis Design and Arthroplasty, Replacement, Hip. Dr. Blumenfeld has published most often in Clin Orthop Relat Res. Dr. Blumenfeld's most frequent co-authors are John P. Meehan, MD, William L. Bargar, MD and Joel R. Politi, MD.
Dr. Blumenfeld's papers by year, 2009 to 2023
Topics Dr. Blumenfeld writes about most
- Hip Prosthesis
- Prosthesis Design
- Arthroplasty, Replacement, Hip
- Prosthesis Failure
- Reoperation
- Acetabulum
- Radiography
- Arthroplasty, Replacement, Knee
Dr. Blumenfeld's most frequent co-authors
- John P. Meehan, MD4 shared papers
- William L. Bargar, MD2 shared papers
- Joel R. Politi, MD2 shared papers
Recent publications by Dr. Blumenfeld
J Arthroplasty
See who Dr. Blumenfeld researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Blumenfeld works with, so you can find a warm path to the right orthopedic surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Thomas J. Blumenfeld received $131,824 in industry payments from 2016 to 2025
CMS Open Payments shows 104 general payments to Dr. Blumenfeld from 8 drug and device companies from 2016 to 2025. Royalties and licenses make up the largest share, 51% of the total. DePuy Synthes Sales Inc. paid the most, $96,661.
General payments to Dr. Blumenfeld by program year, 2016 to 2025
General payments to Dr. Blumenfeld by kind, 2016 to 2025
- Royalties and licenses$67,23651%
- Consulting fees$58,33144%
- Travel and lodging$4,1023%
- Food and beverage$2,1552%
Companies that paid Dr. Blumenfeld 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. Thomas J. Blumenfeld has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Blumenfeld, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Blumenfeld
- 2013
- CMS Stage 1 EHR
- 2012
- Super Doc
- Undated
- Checkbook Top Doc
Source: Dmand AI Professional Profile Data
Dr. Thomas J. Blumenfeld graduated from Tufts University School Of Medicine
Dr. Blumenfeld graduated from Tufts University School Of Medicine in 1990.
- Medical school
- Board certified in orthopaedic surgery
Source: Dmand AI Professional Profile Data
Dr. Thomas J. Blumenfeld accepts plans from 4 insurance carriers
Dr. Blumenfeld is in network with 4 carriers, including Blue Cross Blue Shield of Massachusetts, Blue Cross Blue Shield of Michigan and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- HCSC
- Regence Health Plans
Plan types Dr. Blumenfeld accepts, by number of carriers
- Medicare4
- PPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Thomas J. Blumenfeld'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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) |
| 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. Thomas J. Blumenfeld
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. Thomas J. Blumenfeld's NPI number?
Dr. Thomas J. Blumenfeld's NPI number is 1962479089. It was assigned on March 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas J. Blumenfeld?
Dr. Thomas J. Blumenfeld is an orthopedic surgeon in Stanford, California. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Thomas J. Blumenfeld practice?
Dr. Blumenfeld practices at 2801 K St Suite 310 Suite 310, Sacramento, CA 95816-5119. Dr. Blumenfeld also practices at 300 Pasteur Dr, Stanford, CA 94305. Dr. Blumenfeld's primary practice is Sacramento Knee & Sports Medicine - Sacramento (K St) in Sacramento, California.
What is Dr. Thomas J. Blumenfeld's office phone number?
The practice phone on file for Dr. Blumenfeld is (916) 389-7976.
What is Dr. Thomas J. Blumenfeld's medical license number?
Dr. Blumenfeld holds California license G75858.
What medical group is Dr. Thomas J. Blumenfeld part of?
Dr. Blumenfeld is linked to Orthopedic Specialists of Sacramento.
Does Dr. Thomas J. Blumenfeld accept Medicare?
Yes. CMS data shows Dr. Blumenfeld billed Medicare for 579 services in 2022.
Is Dr. Thomas J. Blumenfeld board certified?
Yes. Dr. Blumenfeld is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery.
What services does Dr. Thomas J. Blumenfeld bill to Medicare?
In 2022, Dr. Blumenfeld's most billed Medicare services were office visit, established patient (99213), injected or infused drug (J3301) and office visit, established patient (99214).
Where did Dr. Thomas J. Blumenfeld go to medical school?
Dr. Blumenfeld graduated from Tufts University School Of Medicine in 1990.
Show 6 more questionsShow fewer questions
What drugs does Dr. Thomas J. Blumenfeld prescribe most?
In 2020 Medicare Part D data, Dr. Blumenfeld's most prescribed drugs by claims were Amoxicillin, Hydrocodone-Acetaminophen and Oxycodone-Acetaminophen.
Has Dr. Thomas J. Blumenfeld received payments from drug or device companies?
CMS Open Payments shows $131,824 in general payments to Dr. Blumenfeld from 8 companies from 2016 to 2025. The largest total came from DePuy Synthes Sales Inc.
How long has Dr. Thomas J. Blumenfeld been practicing?
Dr. Blumenfeld graduated from medical school in 1990, 36 years ago.
Does Dr. Thomas J. Blumenfeld do research?
Dmand AI links 25 publications to Dr. Blumenfeld, published from 2009 to 2023.
Who does Dr. Thomas J. Blumenfeld publish with?
Dr. Blumenfeld's most frequent co-authors are John P. Meehan, MD (4 shared papers), William L. Bargar, MD (2 shared papers) and Joel R. Politi, MD (2 shared papers).
What insurance does Dr. Thomas J. Blumenfeld accept?
Dr. Blumenfeld is in network with 4 carriers, including Blue Cross Blue Shield of Massachusetts, Blue Cross Blue Shield of Michigan and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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