Cesarean SectionDiabetes, GestationalPregnancy Outcome
Dr. Spenser Harvey Perloff, MD
NPI1861855272PAC ID8628361904
- Medicare services, 2022
- 11
- Part D claims, 2024
- 33
- Publications
- 5
- MIPS score, 2024
- 87
- Hospital affiliations
- 3
- Practice address
- 1450 Treat Blvd, Walnut Creek, CA 94597
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
John Muir Medical Center - Walnut C - Imaging - HOPD
Acute Care Hospital outpatient department · Walnut Creek, California
Find Dr. Perloff's professional email, personal email and mobile number
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Dr. Spenser Harvey Perloff is an OB-GYN in Walnut Creek, California
Dr. Perloff practices at John Muir Medical Center - Walnut C - Imaging - HOPD in Walnut Creek, California.
Dr. Perloff's NPI, 1861855272, was assigned on April 1, 2016. Dr. Perloff graduated from Macon & Joan Brock Virginia Health Sciences Eastern Virginia Medical School in 2016. Dr. Perloff holds Missouri license 2022049875.
NPI and contact details
- NPI
- 1861855272NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8628361904
- NPI enumeration date
- April 1, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Spenser Harvey Perloff practices at John Muir Medical Center - Walnut C - Imaging - HOPD in Walnut Creek, California
Dr. Perloff's primary practice is John Muir Medical Center - Walnut C - Imaging - HOPD, at 1450 Treat Blvd, Walnut Creek, CA 94597.
- John Muir Medical Center - Walnut C - Imaging - HOPD1450 Treat Blvd, Walnut Creek, CA 94597
Source: Dmand AI Affiliation Data
Dr. Spenser Harvey Perloff is affiliated with 5 sites of care and 3 medical groups
Dr. Perloff's primary practice is John Muir Medical Center - Walnut C - Imaging - HOPD in Walnut Creek, California. Dr. Perloff is also affiliated with John Muir Medical Center, Walnut Creek. The medical group on file is John Muir Medical Group. Dmand AI also links Dr. Perloff to 2 more hospitals, 2 medical groups and 1 group practice or clinic, each named with a free account. Dr. Perloff's employer is on file too: a hospital.
John Muir Medical Center - Walnut C - Imaging - HOPDPrimary
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Spenser Harvey Perloff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Perloff practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John Muir Medical Center - Walnut C - Imaging - HOPD | Available with a free account |
| +4 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Spenser Harvey Perloff is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. Perloff's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Perloff is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dmand AI has Dr. Perloff's licenses on file in 3 states: Missouri, California and Oklahoma.
Specialties and state licenses
- Obstetrics and gynecology, MissouriPrimary
- California license
- Oklahoma license
Clinical focus
Dmand AI lists menopause among the conditions Dr. Perloff treats.
OB-GYNs near Dr. Perloff
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. Spenser Harvey Perloff billed Medicare for 11 services in 2022
CMS data shows 11 Medicare services from Dr. Perloff across 1 procedure code in 2022, all of them office visits. Medicare paid $615 for them. Every service was in an office.
Medicare services, 202211
Paid by Medicare$615
Procedure codes1
Dr. Perloff's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 02022: 11
- Imaging
- 2021: 142022: 0100%
Dr. Perloff compared with the California median for OB-GYNs, 2022
- Dr. Perloff
- California median
- Medicare services
- 11vs 5881% below
- Part D claims
- 11vs 3569% below
Medians across 3,823 OB-GYNs in California with Dmand AI profiles that report each measure.
Dr. Perloff's most billed Medicare procedure codes, 2022
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. Perloff?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Perloff and other OB-GYNs in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Spenser Harvey Perloff's patients have a median age of 37
Across all payers, Dmand AI patient panel data puts Dr. Perloff's median patient age at 37, with 98% women.
Dr. Perloff's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 37
Patient panel by sex, all payers
- Women98%
- Men1%
Source: Dmand AI Patient Panel Data
Dr. Spenser Harvey Perloff wrote 33 Medicare Part D claims in 2024
In 2024, Dr. Perloff wrote 33 Medicare Part D claims for 12 patients. 97% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $772 in total drug cost. In 2019, CMS named 72 claims across 4 drugs.
Part D claims, 202433
Drugs named by CMS1
Total drug cost$772
Part D patients12
Dr. Perloff's Part D claims by kind of drug, 2024
- Generic32 claims97%
- Brand-name and other1 claims3%
Dr. Perloff'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.
Part D claims for drugs CMS names, 2019 to 2024
- 2019
- 2024
- Claims for drugs CMS names
- 2019: 722024: 1185%
Drugs named by CMS: 1 in 2024, 4 in 2019.
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. Spenser Harvey Perloff scored 87 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Dr. Perloff for performance year 2024, reported as part of a group. Dr. Perloff accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Perloff as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Perloff's MIPS scores, performance year 2024
- 87of 100Final score
- 59.7of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Spenser Harvey Perloff has 5 publications on record
Dmand AI links 5 papers to Dr. Perloff, published from 2015 to 2023. 2015 was the busiest year, with 3. The most frequent topics are Graft vs Host Disease, Hematopoietic Stem Cell Transplantation and H-Y Antigen. Dr. Perloff's most frequent co-authors are David Bernard Miklos, MD, PhD, Kelsi Leigh Schoenrock, MD and Fang Wu, MD.
Papers5
Years published2015 to 2023
Dr. Perloff's papers by year, 2015 to 2023
Topics Dr. Perloff writes about most
- Graft vs Host Disease
- Hematopoietic Stem Cell Transplantation
- H-Y Antigen
- Isoantibodies
Dr. Perloff's most frequent co-authors
- David Bernard Miklos, MD, PhD3 shared papers
- Kelsi Leigh Schoenrock, MD3 shared papers
- Fang Wu, MD2 shared papers
Recent publications by Dr. Perloff
J Immunol Methods
Enzyme-Linked Immunosorbent AssayEpitopesGraft vs Host Disease
AllograftsGraft vs Host DiseaseHematopoietic Stem Cell Transplantation
See who Dr. Perloff researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Perloff 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. Spenser Harvey Perloff received $919 in industry payments from 2016 to 2025
CMS Open Payments shows 36 general payments to Dr. Perloff from 14 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Astellas Pharma US Inc paid the most, $267.
General payments to Dr. Perloff by program year, 2016 to 2025
Companies that paid Dr. Perloff 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. Spenser Harvey Perloff graduated from Macon & Joan Brock Virginia Health Sciences Eastern Virginia Medical School
Dr. Perloff graduated from Macon & Joan Brock Virginia Health Sciences Eastern Virginia Medical School in 2016.
- Medical school
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Spenser Harvey Perloff accepts plans from 10 insurance carriers
Dr. Perloff is in network with 10 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- HCSC
- Humana
- Alliant Health Plans
- Blue Cross and Blue Shield of Kansas City
- +2 more carriersWith a free account
Plan types Dr. Perloff accepts, by number of carriers
- PPO7
- HMO6
- Medicare5
- POS4
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Spenser Harvey Perloff'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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) |
| 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. Spenser Harvey Perloff
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. Spenser Harvey Perloff's NPI number?
Dr. Spenser Harvey Perloff's NPI number is 1861855272. It was assigned on April 1, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Spenser Harvey Perloff?
Dr. Spenser Harvey Perloff is an OB-GYN in Walnut Creek, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Spenser Harvey Perloff practice?
Dr. Perloff practices at 1450 Treat Blvd, Walnut Creek, CA 94597. Dr. Perloff's primary practice is John Muir Medical Center - Walnut C - Imaging - HOPD in Walnut Creek, California. Dmand AI also links Dr. Perloff to 2 hospitals, 2 medical groups and 1 group practice or clinic.
What is Dr. Spenser Harvey Perloff's medical license number?
Dr. Perloff holds Missouri license 2022049875, one of the licenses on file in 3 states.
Which states has Dr. Spenser Harvey Perloff been licensed in?
Dmand AI has state licenses on file for Dr. Perloff in Missouri (2016 to 2026), California (2025 to 2027) and Oklahoma (2020 to 2023).
Which hospitals is Dr. Spenser Harvey Perloff affiliated with?
Dr. Perloff is affiliated with John Muir Medical Center, Walnut Creek. Dmand AI links Dr. Perloff to 2 more hospitals.
What medical group is Dr. Spenser Harvey Perloff part of?
Dr. Perloff is linked to John Muir Medical Group. Dmand AI links Dr. Perloff to 2 more medical groups.
Does Dr. Spenser Harvey Perloff accept Medicare?
Yes. CMS data shows Dr. Perloff billed Medicare for 11 services in 2022, and Dr. Perloff accepts Medicare assignment.
Does Dr. Spenser Harvey Perloff offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Perloff as offering telehealth services.
What is Dr. Spenser Harvey Perloff's MIPS score?
Dr. Perloff's MIPS final score for performance year 2024 is 87 out of 100, reported as part of a group.
Show 9 more questionsShow fewer questions
Is Dr. Spenser Harvey Perloff board certified?
Yes. Dr. Perloff is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
What services does Dr. Spenser Harvey Perloff bill to Medicare?
In 2022, Dr. Perloff's most billed Medicare services were office visit, established patient (99213).
Where did Dr. Spenser Harvey Perloff go to medical school?
Dr. Perloff graduated from Macon & Joan Brock Virginia Health Sciences Eastern Virginia Medical School in 2016.
What drugs does Dr. Spenser Harvey Perloff prescribe most?
In 2024 Medicare Part D data, Dr. Perloff's most prescribed drugs by claims were Dotti.
Has Dr. Spenser Harvey Perloff received payments from drug or device companies?
CMS Open Payments shows $919 in general payments to Dr. Perloff from 14 companies from 2016 to 2025. The largest total came from Astellas Pharma US Inc.
How long has Dr. Spenser Harvey Perloff been practicing?
Dr. Perloff graduated from medical school in 2016, 10 years ago.
Does Dr. Spenser Harvey Perloff do research?
Dmand AI links 5 publications to Dr. Perloff, published from 2015 to 2023.
Who does Dr. Spenser Harvey Perloff publish with?
Dr. Perloff's most frequent co-authors are David Bernard Miklos, MD, PhD (3 shared papers), Kelsi Leigh Schoenrock, MD (3 shared papers) and Fang Wu, MD (2 shared papers).
What insurance does Dr. Spenser Harvey Perloff accept?
Dr. Perloff is in network with 10 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
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