Anastomosis, SurgicalColectomyColonic Neoplasms
Dr. David B. Rosenfeld, MD
NPI1831105873
- Medicare services, 2018
- 83
- Part D claims, 2024
- 21
- Publications
- 2
- Industry payments
- $256
- Affiliated sites
- 2
- Practice address
- 2750 Sycamore Dr, Simi Valley, CA 93065
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Aspen Surgery Center - HOPD
Acute Care Hospital outpatient department · Simi Valley, California
Find Dr. Rosenfeld'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. David B. Rosenfeld is a colorectal surgeon in Simi Valley, California
Dr. Rosenfeld practices at Aspen Surgery Center - HOPD in Simi Valley, California.
Dr. Rosenfeld's NPI, 1831105873, was assigned on July 31, 2006. Dr. Rosenfeld graduated from Wayne State University School Of Medicine in 1992. Dr. Rosenfeld holds California license G83845.
NPI and contact details
- NPI
- 1831105873NPI Registry (opens in a new tab)
- NPI enumeration date
- July 31, 2006
- NPI status
- Active
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. David B. Rosenfeld practices at 2 locations in Simi Valley, California
Dr. Rosenfeld's primary practice is Aspen Surgery Center - HOPD, at 2750 Sycamore Dr, Simi Valley, CA 93065. Dr. Rosenfeld also practices at Aspen Surgery Center, 2975 Sycamore Dr, Simi Valley, CA 93065.
- Aspen Surgery Center - HOPDPrimary2750 Sycamore Dr, Simi Valley, CA 93065
- Aspen Surgery Center2975 Sycamore Dr, Simi Valley, CA 93065 · Ventura CountyPhone(805) 955-6000
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. David B. Rosenfeld is affiliated with 2 sites of care and 1 medical group
Dr. Rosenfeld's primary practice is Aspen Surgery Center - HOPD in Simi Valley, California. Dmand AI also links Dr. Rosenfeld to 1 group practice or clinic and 1 medical group, each named with a free account. Dr. Rosenfeld's employer is on file too: a hospital.
Aspen Surgery Center - HOPDPrimary
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. David B. Rosenfeld's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rosenfeld practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Aspen Surgery Center - HOPD | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Dr. Rosenfeld practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. David B. Rosenfeld is one of 187 colorectal surgeons in California
Colon and rectal surgery is Dr. Rosenfeld's primary specialty in the NPI Registry, under taxonomy code 208C00000X. Dr. Rosenfeld is board certified in colon & rectal surgery by the American Board of Colon and Rectal Surgery. Dmand AI has Dr. Rosenfeld's licenses on file in 2 states: California and Michigan.
Specialties and state licenses
- Colon and rectal surgery, CaliforniaPrimary
- Michigan license
Colorectal surgeons near Dr. Rosenfeld
Counts of colorectal 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. David B. Rosenfeld billed Medicare for 83 services in 2018
CMS data shows 83 Medicare services from Dr. Rosenfeld across 4 procedure codes in 2018. Medicare paid $6,557 for them. Every service was in an office.
Medicare services, 201883
Paid by Medicare$6,557
Procedure codes4
Dr. Rosenfeld's Medicare services by type, 2017 to 2018
- 2017
- 2018
- Office and hospital visits
- 2017: 5772018: 4992%
- Surgery
- 2017: 4772018: 3493%
Dr. Rosenfeld compared with the California median for colorectal surgeons, 2018
- Dr. Rosenfeld
- California median
- Medicare services
- 83vs 27069% below
- Part D claims
- 13vs 7182% below
Medians across 175 colorectal surgeons in California with Dmand AI profiles that report each measure.
Dr. Rosenfeld's most billed Medicare procedure codes, 2018
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. Rosenfeld?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Rosenfeld and other colorectal surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David B. Rosenfeld's patients have a median age of 50
Across all payers, Dmand AI patient panel data puts Dr. Rosenfeld's median patient age at 50, with 49% women.
Dr. Rosenfeld's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 50
Patient panel by sex, all payers
- Women49%
- Men51%
Source: Dmand AI Patient Panel Data
Dr. David B. Rosenfeld wrote 21 Medicare Part D claims in 2024
In 2024, Dr. Rosenfeld wrote 21 Medicare Part D claims for 13 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 $100 in total drug cost. In 2016, CMS named 23 claims across 1 drug.
Part D claims, 202421
Drugs named by CMS1
Total drug cost$100
Part D patients13
Dr. Rosenfeld's Part D claims by kind of drug, 2024
- Generic20 claims95%
- Brand-name and other1 claims5%
Dr. Rosenfeld's most prescribed drugs by claims, 2017
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, 2016 to 2017
- 2016
- 2017
- Claims for drugs CMS names
- 2016: 232017: 1343%
Drugs named by CMS: 1 in 2017, 1 in 2016.
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
For MedTech and pharma teams
Find colorectal surgeons like Dr. Rosenfeld by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. David B. Rosenfeld has 2 publications on record
Dmand AI links 2 papers to Dr. Rosenfeld. Dr. Rosenfeld has published most often in Am Surg.
Papers2
Recent publications by Dr. Rosenfeld
Anal CanalBowen's DiseaseCommunity Health Services
See who Dr. Rosenfeld researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Rosenfeld works with, so you can find a warm path to the right colorectal surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. David B. Rosenfeld received $256 in industry payments from 2016 to 2025
CMS Open Payments shows 4 general payments to Dr. Rosenfeld from 3 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Intuitive Surgical, Inc. paid the most, $191.
General payments to Dr. Rosenfeld by program year, 2016 to 2025
Companies that paid Dr. Rosenfeld 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. David B. Rosenfeld has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Rosenfeld, most recently President of the Aesculapian Society in 1991.
Awards and honors for Dr. Rosenfeld
- 1991
- President of the Aesculapian Society
- Undated
- ACS Fellow
- Class Honors University of Michigan
Source: Dmand AI Professional Profile Data
Dr. David B. Rosenfeld graduated from Wayne State University School Of Medicine
Dr. Rosenfeld graduated from Wayne State University School Of Medicine in 1992. Dr. Rosenfeld is a member of ACS and SLS.
- Medical school
- Board certified in colon & rectal surgery
Source: Dmand AI Professional Profile Data
Sources for Dr. David B. Rosenfeld'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 DataDmand AI Practice 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 Data |
| 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) |
| 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 |
| 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. David B. Rosenfeld
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. David B. Rosenfeld's NPI number?
Dr. David B. Rosenfeld's NPI number is 1831105873. It was assigned on July 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David B. Rosenfeld?
Dr. David B. Rosenfeld is a colorectal surgeon in Simi Valley, California. The primary specialty in the NPI Registry is Colon & Rectal Surgery Physician (taxonomy code 208C00000X).
Where does Dr. David B. Rosenfeld practice?
Dr. Rosenfeld practices at 2750 Sycamore Dr, Simi Valley, CA 93065. Dr. Rosenfeld also practices at 2975 Sycamore Dr, Simi Valley, CA 93065. Dr. Rosenfeld's primary practice is Aspen Surgery Center - HOPD in Simi Valley, California. Dmand AI also links Dr. Rosenfeld to 1 group practice or clinic and 1 medical group.
What is Dr. David B. Rosenfeld's medical license number?
Dr. Rosenfeld holds California license G83845, one of the licenses on file in 2 states.
Which states has Dr. David B. Rosenfeld been licensed in?
Dmand AI has state licenses on file for Dr. Rosenfeld in California (1997 to 2027) and Michigan (1994 to 2019).
Does Dr. David B. Rosenfeld accept Medicare?
Yes. CMS data shows Dr. Rosenfeld billed Medicare for 83 services in 2018.
Is Dr. David B. Rosenfeld board certified?
Yes. Dr. Rosenfeld is board certified in colon & rectal surgery by the American Board of Colon and Rectal Surgery.
What services does Dr. David B. Rosenfeld bill to Medicare?
In 2018, Dr. Rosenfeld's most billed Medicare services were surgery: digestive system (46500), office visit, established patient (99212) and office visit, new patient (99203).
Where did Dr. David B. Rosenfeld go to medical school?
Dr. Rosenfeld graduated from Wayne State University School Of Medicine in 1992.
What drugs does Dr. David B. Rosenfeld prescribe most?
In 2017 Medicare Part D data, Dr. Rosenfeld's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Show 3 more questionsShow fewer questions
Has Dr. David B. Rosenfeld received payments from drug or device companies?
CMS Open Payments shows $256 in general payments to Dr. Rosenfeld from 3 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. David B. Rosenfeld been practicing?
Dr. Rosenfeld graduated from medical school in 1992, 34 years ago.
Does Dr. David B. Rosenfeld do research?
Dmand AI links 2 publications to Dr. Rosenfeld.
Selling to colon and rectal surgery practices?
See colorectal surgeons in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card