ElectrocardiographyHeart VentriclesPregnancy Complications, Cardiovascular
Dr. Phyllis Dawn Oster, MD
NPI1902817919
- Medicare services, 2020
- 313
- Part D claims, 2021
- 85
- Publications
- 2
- Industry payments
- $2,020
- Affiliated sites
- 1
- Practice address
- 3828 Schaufele Ave Suite 250 Suite 250, Long Beach, CA 90808-0016
- Practice phone
- Call (657) 241-9051
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Memorialcare Medical Foundation - Long Beach (Schaufele Ave)
Multi-specialty group site · Long Beach, California
Find Dr. Oster's professional email, personal email and mobile number
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Dr. Phyllis Dawn Oster is an OB-GYN in Long Beach, California
Dr. Oster practices at Memorialcare Medical Foundation - Long Beach (Schaufele Ave) in Long Beach, California.
Dr. Oster's NPI, 1902817919, was assigned on August 11, 2006. Dr. Oster graduated from UC Irvine School of Medicine in 1981. Dr. Oster holds California license G048104.
NPI and contact details
- NPI
- 1902817919NPI Registry (opens in a new tab)
- NPI enumeration date
- August 11, 2006
- NPI status
- Active
- Practice phone
- (657) 241-9051
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Phyllis Dawn Oster practices at Memorialcare Medical Foundation - Long Beach (Schaufele Ave) in Long Beach, California
Dr. Oster's primary practice is Memorialcare Medical Foundation - Long Beach (Schaufele Ave), at 3828 Schaufele Ave Suite 250 Suite 250, Long Beach, CA 90808-0016. The practice phone is (657) 241-9051.
- Memorialcare Medical Foundation - Long Beach (Schaufele Ave)3828 Schaufele Ave Suite 250 Suite 250, Long Beach, CA 90808-0016Phone(657) 241-9051
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Phyllis Dawn Oster is affiliated with 1 site of care and 1 medical group
Dr. Oster's primary practice is Memorialcare Medical Foundation - Long Beach (Schaufele Ave) in Long Beach, California. The medical group on file is MemorialCare Medical Group.
Memorialcare Medical Foundation - Long Beach (Schaufele Ave)Primary
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Phyllis Dawn Oster's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oster practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Memorialcare Medical Foundation - Long Beach (Schaufele Ave) | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Phyllis Dawn Oster is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. Oster's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Oster is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dr. Oster is licensed in California.
Specialties and state licenses
- Obstetrics and gynecology, CaliforniaPrimary
OB-GYNs near Dr. Oster
Counts of OB-GYNs 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. Phyllis Dawn Oster billed Medicare for 313 services in 2020
CMS data shows 313 Medicare services from Dr. Oster across 8 procedure codes in 2020. Medicare paid $17,609 for them. Every service was in an office.
Medicare services, 2020313
Paid by Medicare$17,609
Procedure codes8
Dr. Oster's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 1152020: 15232%
- Other services
- 2019: 1022020: 8814%
- Imaging
- 2019: 332020: 4021%
- Surgery
- 2019: 152020: 1713%
- Lab and pathology
- 2019: 02020: 16
Dr. Oster compared with the California median for OB-GYNs, 2020
- Dr. Oster
- California median
- Medicare services
- 313vs 585.4 times
- Part D claims
- 85vs 352.4 times
Medians across 3,823 OB-GYNs in California with Dmand AI profiles that report each measure.
Dr. Oster's most billed Medicare procedure codes, 2020
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. Oster?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Oster and other OB-GYNs in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Phyllis Dawn Oster's patients have a median age of 56
Across all payers, Dmand AI patient panel data puts Dr. Oster's median patient age at 56, with 100% women.
Dr. Oster's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Phyllis Dawn Oster wrote 85 Medicare Part D claims in 2021
In 2021, Dr. Oster wrote 85 Medicare Part D claims. They cover 5 drugs, with $7,005 in total drug cost. In 2020, CMS named 247 claims across 10 drugs.
Part D claims, 202185
Drugs named by CMS5
Total drug cost$7,005
Dr. Oster's most prescribed drugs by claims, 2021
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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 2472021: 8566%
Drugs named by CMS: 5 in 2021, 10 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Phyllis Dawn Oster has 2 publications on record
Dmand AI links 2 papers to Dr. Oster. Dr. Oster's most frequent co-authors are Brian Mark Chesnie, MD, Michael Crade, MD and David A. Sato, MD.
Papers2
Dr. Oster's most frequent co-authors
- Brian Mark Chesnie, MD1 shared paper
- Michael Crade, MD1 shared paper
- David A. Sato, MD1 shared paper
Recent publications by Dr. Oster
Carcinoma, Squamous CellDrainageSuppuration
See who Dr. Oster researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Oster works with, so you can find a warm path to the right OB-GYNs.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Phyllis Dawn Oster received $2,020 in industry payments from 2016 to 2021
CMS Open Payments shows 105 general payments to Dr. Oster from 26 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 96% of the total. Abbvie Inc. paid the most, $369.
General payments to Dr. Oster by program year, 2016 to 2021
General payments to Dr. Oster by kind, 2016 to 2021
$2Kin total
- Food and beverage$1,94896%
- Education$734%
Companies that paid Dr. Oster the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Phyllis Dawn Oster has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Oster, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Oster
- 2013
- CMS Stage 1 EHR
- Undated
- ACOG Fellow
Source: Dmand AI Professional Profile Data
Dr. Phyllis Dawn Oster graduated from UC Irvine School of Medicine
Dr. Oster graduated from UC Irvine School of Medicine in 1981. Dr. Oster is a member of American College of Obstetricians and Gynecologists.
- Medical school
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Phyllis Dawn Oster accepts plans from 4 insurance carriers
Dr. Oster is in network with 4 carriers, including Elevance, Blue Cross Blue Shield of Massachusetts and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- HCSC
Plan types Dr. Oster accepts, by number of carriers
- Medicare4
- PPO4
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Phyllis Dawn Oster'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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. Phyllis Dawn Oster
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. Phyllis Dawn Oster's NPI number?
Dr. Phyllis Dawn Oster's NPI number is 1902817919. It was assigned on August 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Phyllis Dawn Oster?
Dr. Phyllis Dawn Oster is an OB-GYN in Long Beach, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Phyllis Dawn Oster practice?
Dr. Oster practices at 3828 Schaufele Ave Suite 250 Suite 250, Long Beach, CA 90808-0016. Dr. Oster's primary practice is Memorialcare Medical Foundation - Long Beach (Schaufele Ave) in Long Beach, California.
What is Dr. Phyllis Dawn Oster's office phone number?
The practice phone on file for Dr. Oster is (657) 241-9051.
What is Dr. Phyllis Dawn Oster's medical license number?
Dr. Oster holds California license G048104.
What medical group is Dr. Phyllis Dawn Oster part of?
Dr. Oster is linked to MemorialCare Medical Group.
Does Dr. Phyllis Dawn Oster accept Medicare?
Yes. CMS data shows Dr. Oster billed Medicare for 313 services in 2020.
Is Dr. Phyllis Dawn Oster board certified?
Yes. Dr. Oster is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
What services does Dr. Phyllis Dawn Oster bill to Medicare?
In 2020, Dr. Oster's most billed Medicare services were office visit, established patient (99213), medicare service (G0101) and ultrasound (76830).
Where did Dr. Phyllis Dawn Oster go to medical school?
Dr. Oster graduated from UC Irvine School of Medicine in 1981.
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What drugs does Dr. Phyllis Dawn Oster prescribe most?
In 2021 Medicare Part D data, Dr. Oster's most prescribed drugs by claims were Alendronate Sodium, Estradiol and Progesterone.
Has Dr. Phyllis Dawn Oster received payments from drug or device companies?
CMS Open Payments shows $2,020 in general payments to Dr. Oster from 26 companies from 2016 to 2021. The largest total came from Abbvie Inc.
How long has Dr. Phyllis Dawn Oster been practicing?
Dr. Oster graduated from medical school in 1981, 45 years ago.
Does Dr. Phyllis Dawn Oster do research?
Dmand AI links 2 publications to Dr. Oster.
Who does Dr. Phyllis Dawn Oster publish with?
Dr. Oster's most frequent co-authors are Brian Mark Chesnie, MD (1 shared paper), Michael Crade, MD (1 shared paper) and David A. Sato, MD (1 shared paper).
What insurance does Dr. Phyllis Dawn Oster accept?
Dr. Oster is in network with 4 carriers, including Elevance, Blue Cross Blue Shield of Massachusetts and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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