Dr. Bruce Abraham Greenfield, MD
- Medicare services, 2024
- 2,687
- Medicare patients, 2024
- 525
- Part D claims, 2024
- 2,615
- Hospital affiliations
- 3
- Industry payments
- $7,582
- Practice address
- 1400 South Grand Ave, Suite 700, Los Angeles, CA 90015
- Practice phone
- Call (213) 866-1900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Grand Avenue Surgery Center
Surgery Center - Medicare-Certified · Los Angeles, California
Find Dr. Greenfield'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. Bruce Abraham Greenfield is a nephrologist in Los Angeles, California
Dr. Greenfield practices at Grand Avenue Surgery Center in Los Angeles, California.
Dr. Greenfield's NPI, 1043224686, was assigned on July 28, 2006. Dr. Greenfield graduated from Albert Einstein College of Medicine in 1980. Dr. Greenfield holds California license G46615.
- NPI
- 1043224686NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9739098286
- NPI enumeration date
- July 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (213) 866-1900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Bruce Abraham Greenfield practices at Grand Avenue Surgery Center in Los Angeles, California
Dr. Greenfield's primary practice is Grand Avenue Surgery Center, at 1400 South Grand Ave, Suite 700, Los Angeles, CA 90015. The practice phone is (213) 866-1900.
- Grand Avenue Surgery Center1400 South Grand Ave, Suite 700, Los Angeles, CA 90015Phone(213) 866-1900
Source: Dmand AI Affiliation Data
Dr. Bruce Abraham Greenfield is affiliated with 11 sites of care and 1 medical group
Dr. Greenfield's primary practice is Grand Avenue Surgery Center in Los Angeles, California. Dr. Greenfield is also affiliated with PIH Health Good Samaritan Hospital. The medical group on file is Premier Nephrology Medical Group. Dmand AI also links Dr. Greenfield to 2 more hospitals, 5 dialysis centers, 1 group practice or clinic and 1 home health agency, 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. Bruce Abraham Greenfield's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Greenfield practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Grand Avenue Surgery Center | Available with a free account |
| +10 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Bruce Abraham Greenfield is one of 1,401 nephrologists in California
Nephrology is Dr. Greenfield's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Greenfield is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Greenfield's licenses on file in 2 states: California and Texas.
Specialties and state licenses
- Nephrology, CaliforniaPrimary
- Texas license
Clinical focus
Dmand AI lists chronic kidney disease, fluid and electrolyte imbalances and kidney cysts among the conditions Dr. Greenfield treats.
Nephrologists near Dr. Greenfield
Counts of nephrologists 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. Bruce Abraham Greenfield billed Medicare for 2,687 services in 2024
CMS data shows 2,687 Medicare services from Dr. Greenfield across 17 procedure codes in 2024, for 525 Medicare patients. Medicare paid $364,188 for them.
Dr. Greenfield's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,4852024: 1,3459%
- Tests and treatments
- 2023: 7982024: 99224%
- Other services
- 2023: 02024: 350
Where Dr. Greenfield's Medicare services took place, 2024
- In an office2,31386%
- In a facility37414%
Dr. Greenfield compared with the California median for nephrologists, 2024
- Dr. Greenfield
- California median
- Medicare services
- 2,687vs 1,0842.5 times
- Medicare patients
- 525vs 30771% above
- Part D claims
- 2,188vs 9552.3 times
Medians across 1,355 nephrologists in California with Dmand AI profiles that report each measure.
Dr. Greenfield'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. Greenfield?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Greenfield and other nephrologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Bruce Abraham Greenfield treated 525 Medicare patients in 2024, average age 67
CMS counts 525 Medicare patients who saw Dr. Greenfield in 2024. The largest group is 65 to 74, with 238 patients. 75% of them have chronic kidney disease, and 75% have diabetes. 95% are also on Medicaid. Their average risk score is 5.37, 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. Greenfield's median patient age at 64, with 46% women.
Dr. Greenfield's Medicare patients by age, 2024
Dr. Greenfield's Medicare patients by sex, 2024
- Women26550%
- Men26050%
Chronic conditions among Dr. Greenfield's Medicare patients, 2024
- Chronic kidney disease75%
- Diabetes75%
- High blood pressure75%
- High cholesterol75%
- Heart failure48%
- Ischemic heart disease44%
- Arthritis39%
- Mood disorders25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Greenfield's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women46%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Bruce Abraham Greenfield wrote 2,615 Medicare Part D claims in 2024
In 2024, Dr. Greenfield wrote 2,615 Medicare Part D claims for 379 patients. 69% of them were for generic drugs. CMS names the drug for 2,188 of them, across 54 drugs with 11 or more claims each, at $1,206,939 in total drug cost. In 2023, CMS named 1,683 claims across 44 drugs.
Dr. Greenfield's Part D claims by kind of drug, 2024
- Generic1,805 claims69%
- Brand-name795 claims30%
- Other15 claims1%
Dr. Greenfield'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. Greenfield's Part D claims, 2024
- Opioids1%18 of 2,615 claims
- Antibiotics2%59 of 2,615 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: 1,6832024: 2,18830%
Drugs named by CMS: 54 in 2024, 44 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. Bruce Abraham Greenfield offers telehealth to Medicare patients
Dr. Greenfield accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Greenfield as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Bruce Abraham Greenfield received $7,582 in industry payments from 2016 to 2025
CMS Open Payments shows 194 general payments to Dr. Greenfield from 28 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 64% of the total. Relypsa, Inc. paid the most, $1,949.
General payments to Dr. Greenfield by program year, 2016 to 2025
General payments to Dr. Greenfield by kind, 2016 to 2025
- Food and beverage$4,88264%
- Speaker and faculty fees$1,80024%
- Honoraria$4005%
- Consulting fees$3505%
- Education$1492%
Companies that paid Dr. Greenfield 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. Bruce Abraham Greenfield has 1 award and honors on record
Dmand AI lists 1 award for Dr. Greenfield, most recently Top Doctors:LA Area in 2013.
Awards and honors for Dr. Greenfield
- 2013
- Top Doctors:LA Area
Source: Dmand AI Professional Profile Data
Dr. Bruce Abraham Greenfield graduated from Albert Einstein College of Medicine
Dr. Greenfield graduated from Albert Einstein College of Medicine in 1980.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Bruce Abraham Greenfield accepts plans from 8 insurance carriers
Dr. Greenfield is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Molina
- Regence Health Plans
- CMS Medicare
- LA Care
Plan types Dr. Greenfield accepts, by number of carriers
- Medicare7
- PPO5
- HMO4
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Bruce Abraham Greenfield'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) |
| 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. Bruce Abraham Greenfield
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. Bruce Abraham Greenfield's NPI number?
Dr. Bruce Abraham Greenfield's NPI number is 1043224686. It was assigned on July 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Bruce Abraham Greenfield?
Dr. Bruce Abraham Greenfield is a nephrologist in Los Angeles, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Bruce Abraham Greenfield practice?
Dr. Greenfield practices at 1400 South Grand Ave, Suite 700, Los Angeles, CA 90015. Dr. Greenfield's primary practice is Grand Avenue Surgery Center in Los Angeles, California. Dmand AI also links Dr. Greenfield to 2 hospitals, 5 dialysis centers, 1 group practice or clinic and 1 home health agency.
What is Dr. Bruce Abraham Greenfield's office phone number?
The practice phone on file for Dr. Greenfield is (213) 866-1900.
What is Dr. Bruce Abraham Greenfield's medical license number?
Dr. Greenfield holds California license G46615, one of the licenses on file in 2 states.
Which states has Dr. Bruce Abraham Greenfield been licensed in?
Dmand AI has state licenses on file for Dr. Greenfield in California (1981 to 2027) and Texas (1982 to 1986).
Which hospitals is Dr. Bruce Abraham Greenfield affiliated with?
Dr. Greenfield is affiliated with PIH Health Good Samaritan Hospital. Dmand AI links Dr. Greenfield to 2 more hospitals.
What medical group is Dr. Bruce Abraham Greenfield part of?
Dr. Greenfield is linked to Premier Nephrology Medical Group.
Does Dr. Bruce Abraham Greenfield accept Medicare?
Yes. CMS data shows Dr. Greenfield billed Medicare for 2,687 services in 2024, and Dr. Greenfield accepts Medicare assignment.
Does Dr. Bruce Abraham Greenfield offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Greenfield as offering telehealth services.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Bruce Abraham Greenfield see?
CMS counts 525 Medicare patients who saw Dr. Greenfield in 2024, with an average age of 67.
Is Dr. Bruce Abraham Greenfield board certified?
Yes. Dr. Greenfield is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Bruce Abraham Greenfield bill to Medicare?
In 2024, Dr. Greenfield's most billed Medicare services were dialysis (90960), medicare service (G2211) and office visit, established patient (99214).
Where did Dr. Bruce Abraham Greenfield go to medical school?
Dr. Greenfield graduated from Albert Einstein College of Medicine in 1980.
What drugs does Dr. Bruce Abraham Greenfield prescribe most?
In 2024 Medicare Part D data, Dr. Greenfield's most prescribed drugs by claims were Farxiga, Furosemide and Sevelamer Carbonate.
Has Dr. Bruce Abraham Greenfield received payments from drug or device companies?
CMS Open Payments shows $7,582 in general payments to Dr. Greenfield from 28 companies from 2016 to 2025. The largest total came from Relypsa, Inc.
How long has Dr. Bruce Abraham Greenfield been practicing?
Dr. Greenfield graduated from medical school in 1980, 46 years ago.
What insurance does Dr. Bruce Abraham Greenfield accept?
Dr. Greenfield is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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