Dr. Jennifer A. Greer, MD
- Medicare patients, 2024
- 11
- Part D claims, 2024
- 102
- Industry payments
- $386
- Affiliated sites
- 2
- Medical group
- 1
- Practice address
- 380 West MacArthur Boulevard, Oakland, CA 94609
- Practice phone
- Call (510) 251-0121
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Addiction Medicine & Recovery Services at Oakland Medical Center
Outpatient Addiction Treatment · Oakland, California
Find Dr. Greer'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. Jennifer A. Greer is a general surgeon in Oakland, California
Dr. Greer practices at Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California.
Dr. Greer's NPI, 1114002888, was assigned on October 25, 2006. Dr. Greer graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 1994. Dr. Greer's California license number on file is A72241.
- NPI
- 1114002888NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1759565278
- NPI enumeration date
- October 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 251-0121
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jennifer A. Greer practices at Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California
Dr. Greer's primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center, at 380 West MacArthur Boulevard, Oakland, CA 94609. The practice phone is (510) 251-0121.
- Addiction Medicine & Recovery Services at Oakland Medical Center380 West MacArthur Boulevard, Oakland, CA 94609Phone(510) 251-0121
Source: Dmand AI Affiliation Data
Dr. Jennifer A. Greer is affiliated with 2 sites of care and 1 medical group
Dr. Greer's primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Greer to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jennifer A. Greer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Greer practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Addiction Medicine & Recovery Services at Oakland Medical Center | 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. Jennifer A. Greer is one of 2,926 general surgeons in California
Surgery is Dr. Greer's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Greer is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Greer's licenses on file in 4 states: California, Ohio, New York and Connecticut.
Specialties and state licenses
- Surgery, CaliforniaPrimary
- Ohio license
- New York license
- Connecticut license
Clinical focus
Dmand AI lists colon removal among the conditions Dr. Greer treats.
General surgeons near Dr. Greer
Counts of general 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. Jennifer A. Greer treated 11 Medicare patients in 2024, average age 64
CMS counts 11 Medicare patients who saw Dr. Greer in 2024. Their average risk score is 2.13, 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. Greer's median patient age at 57, with 70% women.
Dr. Greer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women70%
- Men29%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jennifer A. Greer wrote 102 Medicare Part D claims in 2024
In 2024, Dr. Greer wrote 102 Medicare Part D claims for 63 patients. 94% of them were for generic drugs. CMS names the drug for 53 of them, across 2 drugs with 11 or more claims each, at $532 in total drug cost. In 2023, CMS named 65 claims across 2 drugs.
Dr. Greer's Part D claims by kind of drug, 2024
- Generic96 claims94%
- Brand-name and other6 claims6%
Dr. Greer'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. Greer's Part D claims, 2024
- Opioids48%49 of 102 claims
- Antibiotics18%18 of 102 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: 652024: 5318%
Drugs named by CMS: 2 in 2024, 2 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
How Dr. Jennifer A. Greer takes part in Medicare
Dr. Greer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Mastectomy: 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. Jennifer A. Greer received $386 in industry payments from 2019 to 2024
CMS Open Payments shows 17 general payments to Dr. Greer from 4 drug and device companies from 2019 to 2024. Food and beverage make up the largest share, 100% of the total. Galderma Laboratories, L.P. paid the most, $180.
General payments to Dr. Greer by program year, 2019 to 2024
Companies that paid Dr. Greer the most, 2019 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jennifer A. Greer has 1 award and honors on record
Dmand AI lists 1 award for Dr. Greer, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Greer
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Jennifer A. Greer graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science
Dr. Greer graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 1994.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Jennifer A. Greer accepts plans from 2 insurance carriers
Dr. Greer is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Greer accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Jennifer A. Greer'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 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) |
| 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. Jennifer A. Greer
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. Jennifer A. Greer's NPI number?
Dr. Jennifer A. Greer's NPI number is 1114002888. It was assigned on October 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Jennifer A. Greer?
Dr. Jennifer A. Greer is a general surgeon in Oakland, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Jennifer A. Greer practice?
Dr. Greer practices at 380 West MacArthur Boulevard, Oakland, CA 94609. Dr. Greer's primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California. Dmand AI also links Dr. Greer to 1 group practice or clinic.
What is Dr. Jennifer A. Greer's office phone number?
The practice phone on file for Dr. Greer is (510) 251-0121.
What is Dr. Jennifer A. Greer's medical license number?
Dr. Greer's California license number on file is A72241, one of the licenses on file in 4 states.
Which states has Dr. Jennifer A. Greer been licensed in?
Dmand AI has state licenses on file for Dr. Greer in California (2000 to 2025), Ohio (since 2015), New York (1999 to 2001) and Connecticut (1998 to 1999).
What medical group is Dr. Jennifer A. Greer part of?
Dr. Greer is linked to The Permanente Medical Group, Inc.
Does Dr. Jennifer A. Greer accept Medicare?
Yes. CMS lists Dr. Greer as accepting Medicare assignment.
How many Medicare patients does Dr. Jennifer A. Greer see?
CMS counts 11 Medicare patients who saw Dr. Greer in 2024, with an average age of 64.
Is Dr. Jennifer A. Greer board certified?
Yes. Dr. Greer is board certified in surgery by the American Board of Surgery.
Show 5 more questionsShow fewer questions
Where did Dr. Jennifer A. Greer go to medical school?
Dr. Greer graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 1994.
What drugs does Dr. Jennifer A. Greer prescribe most?
In 2024 Medicare Part D data, Dr. Greer's most prescribed drugs by claims were Hydromorphone HCl and Ibuprofen.
Has Dr. Jennifer A. Greer received payments from drug or device companies?
CMS Open Payments shows $386 in general payments to Dr. Greer from 4 companies from 2019 to 2024. The largest total came from Galderma Laboratories, L.P.
How long has Dr. Jennifer A. Greer been practicing?
Dr. Greer graduated from medical school in 1994, 32 years ago.
What insurance does Dr. Jennifer A. Greer accept?
Dr. Greer is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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