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Dr. Robert Bruce Lefkowitz, MD
NPI1780748111
- Part D claims, 2024
- 105
- Publications
- 196
- MIPS score, 2024
- 86
- Industry payments
- $407
- Affiliated sites
- 2
- Practice address
- 2240 E Gonzales Rd #100, Oxnard, CA 93036
- Practice phone
- Call (805) 981-5151
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Magnolia Family Medical Center - East
FQHC - Main Site · Oxnard, California
Find Dr. Lefkowitz's professional email, personal email and mobile number
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Dr. Robert Bruce Lefkowitz is an obstetrics physician in Oxnard, California
Dr. Lefkowitz practices at Magnolia Family Medical Center - East in Oxnard, California.
Dr. Lefkowitz's NPI, 1780748111, was assigned on December 20, 2006. Dr. Lefkowitz graduated from SUNY Downstate Health Sciences University in 1973. Dr. Lefkowitz holds California license G279520.
NPI and contact details
- NPI
- 1780748111NPI Registry (opens in a new tab)
- NPI enumeration date
- December 20, 2006
- NPI status
- Active
- Practice phone
- (805) 981-5151
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 79
- Medical school graduation
- 1973
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Robert Bruce Lefkowitz practices at Magnolia Family Medical Center - East in Oxnard, California
Dr. Lefkowitz's primary practice is Magnolia Family Medical Center - East, at 2240 E Gonzales Rd #100, Oxnard, CA 93036 in Ventura County. The practice phone is (805) 981-5151.
- Magnolia Family Medical Center - East2240 E Gonzales Rd #100, Oxnard, CA 93036 · Ventura CountyPhone(805) 981-5151
Source: Dmand AI Affiliation Data
Dr. Robert Bruce Lefkowitz is affiliated with 2 sites of care and 1 medical group
Dr. Lefkowitz's primary practice is Magnolia Family Medical Center - East in Oxnard, California. The medical group on file is Ventura County Medical Center. Dmand AI also links Dr. Lefkowitz to 1 more group practice or clinic, named with a free account.
Magnolia Family Medical Center - EastPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Robert Bruce Lefkowitz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lefkowitz practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Magnolia Family Medical Center - East | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert Bruce Lefkowitz is one of 164 obstetrics physicians in California
Obstetrics is Dr. Lefkowitz's primary specialty in the NPI Registry, under taxonomy code 207VX0000X. Dr. Lefkowitz is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dr. Lefkowitz is licensed in California.
Specialties and state licenses
- Obstetrics, CaliforniaPrimary
Clinical focus
Dmand AI lists menopause and pelvic prolapse among the conditions Dr. Lefkowitz treats.
Obstetrics physicians near Dr. Lefkowitz
Counts of obstetrics physicians with a Dmand AI profile, by place and practice. Each opens the list.
164obstetrics physicians in California
2obstetrics physicians in Oxnard
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Robert Bruce Lefkowitz's patients have a median age of 40
Across all payers, Dmand AI patient panel data puts Dr. Lefkowitz's median patient age at 40, with 99% women.
Dr. Lefkowitz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 40
Patient panel by sex, all payers
- Women99%
- Men1%
Source: Dmand AI Patient Panel Data
Dr. Robert Bruce Lefkowitz wrote 105 Medicare Part D claims in 2024
In 2024, Dr. Lefkowitz wrote 105 Medicare Part D claims for 16 patients. 75% of them were for generic drugs. CMS names the drug for 30 of them, across 2 drugs with 11 or more claims each, at $364 in total drug cost. In 2023, CMS named 40 claims across 3 drugs.
Part D claims, 2024105
Drugs named by CMS2
Total drug cost$364
Part D patients16
Dr. Lefkowitz's Part D claims by kind of drug, 2024
- Generic79 claims75%
- Brand-name and other26 claims25%
Dr. Lefkowitz'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. Lefkowitz's Part D claims, 2024
- Antibiotics16%17 of 105 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: 402024: 3025%
Drugs named by CMS: 2 in 2024, 3 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. Robert Bruce Lefkowitz scored 86 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Dr. Lefkowitz for performance year 2024, reported as part of a group.
Dr. Lefkowitz's MIPS scores, performance year 2024
- 86of 100Final score
- 64.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 72of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Robert Bruce Lefkowitz has 196 publications on record
Dmand AI links 196 papers to Dr. Lefkowitz, published from 2001 to 2016. 2001 was the busiest year, with 2. The most frequent topics are Receptors, Adrenergic, beta, Adenylyl Cyclases and GTP-Binding Proteins. Dr. Lefkowitz has published most often in J Biol Chem. Dr. Lefkowitz's most frequent co-authors are Debra A. Schwinn, MD, Stephen Bryant Liggett, MD and Uta Francke, MD.
Papers196
Years published2001 to 2016
Dr. Lefkowitz's papers by year, 2001 to 2016
Topics Dr. Lefkowitz writes about most
- Receptors, Adrenergic, beta
- Adenylyl Cyclases
- GTP-Binding Proteins
- Kinetics
- Receptors, Adrenergic
- Isoproterenol
- Phosphorylation
- Amino Acid Sequence
Dr. Lefkowitz's most frequent co-authors
- Debra A. Schwinn, MD9 shared papers
- Stephen Bryant Liggett, MD6 shared papers
- Uta Francke, MD4 shared papers
Recent publications by Dr. Lefkowitz
Curr Opin Cell Biol
Biophysical PhenomenaLigandsProtein Conformation
Cell LineCyclic AMPInositol Phosphates
AngiotensinsArrestinsbeta-Arrestin 1
Proc Natl Acad Sci U S A
Adrenergic beta-2 Receptor AntagonistsAdrenergic beta-AntagonistsArrestins
See who Dr. Lefkowitz researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Lefkowitz works with, so you can find a warm path to the right obstetrics physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Robert Bruce Lefkowitz received $407 in industry payments from 2016 to 2024
CMS Open Payments shows 9 general payments to Dr. Lefkowitz from 5 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Hologic Inc paid the most, $208.
General payments to Dr. Lefkowitz by program year, 2016 to 2024
Companies that paid Dr. Lefkowitz 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. Robert Bruce Lefkowitz has 1 award and honors on record
Dmand AI lists 1 award for Dr. Lefkowitz.
Awards and honors for Dr. Lefkowitz
- Undated
- ACOG Fellow
Source: Dmand AI Professional Profile Data
Dr. Robert Bruce Lefkowitz graduated from SUNY Downstate Health Sciences University
Dr. Lefkowitz graduated from SUNY Downstate Health Sciences University in 1973.
- Medical school
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Robert Bruce Lefkowitz accepts plans from 14 insurance carriers
Dr. Lefkowitz is in network with 14 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +6 more carriersWith a free account
Plan types Dr. Lefkowitz accepts, by number of carriers
- PPO9
- HMO7
- Medicare7
- POS5
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Robert Bruce Lefkowitz'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (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. Robert Bruce Lefkowitz
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. Robert Bruce Lefkowitz's NPI number?
Dr. Robert Bruce Lefkowitz's NPI number is 1780748111. It was assigned on December 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert Bruce Lefkowitz?
Dr. Robert Bruce Lefkowitz is an obstetrics physician in Oxnard, California. The primary specialty in the NPI Registry is Obstetrics Physician (taxonomy code 207VX0000X).
Where does Dr. Robert Bruce Lefkowitz practice?
Dr. Lefkowitz practices at 2240 E Gonzales Rd #100, Oxnard, CA 93036. Dr. Lefkowitz's primary practice is Magnolia Family Medical Center - East in Oxnard, California. Dmand AI also links Dr. Lefkowitz to 1 group practice or clinic.
What is Dr. Robert Bruce Lefkowitz's office phone number?
The practice phone on file for Dr. Lefkowitz is (805) 981-5151.
What is Dr. Robert Bruce Lefkowitz's medical license number?
Dr. Lefkowitz holds California license G279520.
What medical group is Dr. Robert Bruce Lefkowitz part of?
Dr. Lefkowitz is linked to Ventura County Medical Center.
What is Dr. Robert Bruce Lefkowitz's MIPS score?
Dr. Lefkowitz's MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.
Is Dr. Robert Bruce Lefkowitz board certified?
Yes. Dr. Lefkowitz is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
Where did Dr. Robert Bruce Lefkowitz go to medical school?
Dr. Lefkowitz graduated from SUNY Downstate Health Sciences University in 1973.
What drugs does Dr. Robert Bruce Lefkowitz prescribe most?
In 2024 Medicare Part D data, Dr. Lefkowitz's most prescribed drugs by claims were Nitrofurantoin Mono-Macro and Sumatriptan Succinate.
Show 5 more questionsShow fewer questions
Has Dr. Robert Bruce Lefkowitz received payments from drug or device companies?
CMS Open Payments shows $407 in general payments to Dr. Lefkowitz from 5 companies from 2016 to 2024. The largest total came from Hologic Inc.
How long has Dr. Robert Bruce Lefkowitz been practicing?
Dr. Lefkowitz graduated from medical school in 1973, 53 years ago.
Does Dr. Robert Bruce Lefkowitz do research?
Dmand AI links 196 publications to Dr. Lefkowitz, published from 2001 to 2016.
Who does Dr. Robert Bruce Lefkowitz publish with?
Dr. Lefkowitz's most frequent co-authors are Debra A. Schwinn, MD (9 shared papers), Stephen Bryant Liggett, MD (6 shared papers) and Uta Francke, MD (4 shared papers).
What insurance does Dr. Robert Bruce Lefkowitz accept?
Dr. Lefkowitz is in network with 14 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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