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Dr. Ian H. Thorneycroft, MD
NPI1154378495
- Medicare services, 2020
- 139
- Part D claims, 2024
- 40
- Publications
- 44
- Industry payments
- $309
- Affiliated sites
- 1
- Practice address
- 900 E Hamilton Ave, Campbell, CA 95008
- Practice phone
- Call (469) 466-7007
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Signify Health
Campbell, California
Find Dr. Thorneycroft's professional email, personal email and mobile number
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Dr. Ian H. Thorneycroft is a gynecology physician in Campbell, California
Dr. Thorneycroft practices at Signify Health in Campbell, California.
Dr. Thorneycroft's NPI, 1154378495, was assigned on May 30, 2006. Dr. Thorneycroft graduated from WashU Medicine in 1976. Dr. Thorneycroft's Alabama license number on file is 15135.
NPI and contact details
- NPI
- 1154378495NPI Registry (opens in a new tab)
- NPI enumeration date
- May 30, 2006
- NPI status
- Active
- Practice phone
- (469) 466-7007
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1976
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Ian H. Thorneycroft practices at Signify Health in Campbell, California
Dr. Thorneycroft's primary practice is Signify Health, at 900 E Hamilton Ave, Campbell, CA 95008 in Santa Clara County. The practice phone is (469) 466-7007.
- Signify Health900 E Hamilton Ave, Campbell, CA 95008 · Santa Clara CountyPhone(469) 466-7007
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ian H. Thorneycroft is affiliated with 2 sites of care and 2 medical groups
Dr. Thorneycroft's primary practice is Signify Health in Campbell, California. The medical group on file is Signify Health. Dmand AI also links Dr. Thorneycroft to 1 more group practice or clinic and 1 medical group, each named with a free account.
Signify HealthPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ian H. Thorneycroft's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Thorneycroft practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Signify Health | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ian H. Thorneycroft is one of 297 gynecology physicians in California
Gynecology is Dr. Thorneycroft's primary specialty in the NPI Registry, under taxonomy code 207VG0400X. Dr. Thorneycroft is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dmand AI has Dr. Thorneycroft's licenses on file in 3 states: Alabama, California and Louisiana.
Specialties and state licenses
- Gynecology, AlabamaPrimary
- California license
- Louisiana license
Gynecology physicians near Dr. Thorneycroft
Counts of gynecology physicians with a Dmand AI profile, by place and practice. Each opens the list.
297gynecology physicians in California
4gynecology physicians in Campbell
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ian H. Thorneycroft billed Medicare for 139 services in 2020
CMS data shows 139 Medicare services from Dr. Thorneycroft across 5 procedure codes in 2020. Medicare paid $2,355 for them. Every service was in an office.
Medicare services, 2020139
Paid by Medicare$2,355
Procedure codes5
Dr. Thorneycroft's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Drugs given in the office
- 2019: 8562020: 7292%
- Office and hospital visits
- 2019: 2502020: 3387%
- Tests and treatments
- 2019: 2292020: 2290%
- Lab and pathology
- 2019: 972020: 1288%
- Imaging
- 2019: 402020: 0100%
- Surgery
- 2019: 282020: 0100%
Dr. Thorneycroft compared with the California median for gynecology physicians, 2020
- Dr. Thorneycroft
- California median
- Medicare services
- 139vs 10434% above
- Part D claims
- 519vs 608.7 times
Medians across 253 gynecology physicians in California with Dmand AI profiles that report each measure.
Dr. Thorneycroft'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. Thorneycroft?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Thorneycroft and other gynecology physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ian H. Thorneycroft's patients have a median age of 72
Across all payers, Dmand AI patient panel data puts Dr. Thorneycroft's median patient age at 72, with 57% women.
Dr. Thorneycroft's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women57%
- Men42%
Source: Dmand AI Patient Panel Data
Dr. Ian H. Thorneycroft wrote 40 Medicare Part D claims in 2024
In 2024, Dr. Thorneycroft wrote 40 Medicare Part D claims. 80% of them were for generic drugs. They cover 15 drugs, with $6,446 in total drug cost. In 2018, CMS named 167 claims across 8 drugs.
Part D claims, 202440
Drugs named by CMS15
Total drug cost$6,446
Dr. Thorneycroft's Part D claims by kind of drug, 2024
- Generic32 claims80%
- Brand-name and other8 claims20%
Dr. Thorneycroft's most prescribed drugs by claims, 2019
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, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 1672019: 519211%
Drugs named by CMS: 15 in 2019, 8 in 2018.
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
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Dr. Ian H. Thorneycroft has 44 publications on record
Dmand AI links 44 papers to Dr. Thorneycroft in 2005. The most frequent topics are Estradiol, Progesterone and Luteinizing Hormone. Dr. Thorneycroft has published most often in Am J Obstet Gynecol. Dr. Thorneycroft's most frequent co-authors are Maria Bustillo, MD, John Buster, MD and Botros M. Rizk, MD.
Papers44
Topics Dr. Thorneycroft writes about most
- Estradiol
- Progesterone
- Luteinizing Hormone
- Radioimmunoassay
- Follicle Stimulating Hormone
- Infertility, Female
- Menstruation
- Ovulation
Dr. Thorneycroft's most frequent co-authors
Recent publications by Dr. Thorneycroft
AlabamaCervix UteriChlamydia Infections
In Vitro TechniquesSperm Motility
Am J Obstet Gynecol
Abruptio PlacentaeAnalysis of VarianceAntigens, Tumor-Associated, Carbohydrate
See who Dr. Thorneycroft researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Thorneycroft works with, so you can find a warm path to the right gynecology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ian H. Thorneycroft received $309 in industry payments from 2018 to 2024
CMS Open Payments shows 7 general payments to Dr. Thorneycroft from 2 drug and device companies from 2018 to 2024. Food and beverage make up the largest share, 97% of the total. Novo Nordisk Inc paid the most, $295.
General payments to Dr. Thorneycroft by program year, 2018 to 2024
General payments to Dr. Thorneycroft by kind, 2018 to 2024
$309in total
- Food and beverage$30097%
- Education$93%
Companies that paid Dr. Thorneycroft the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ian H. Thorneycroft has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Thorneycroft, most recently CMS Stage 1 EHR in 2012.
Awards and honors for Dr. Thorneycroft
- 2012
- CMS Stage 1 EHR
- Undated
- ACOG Fellow
Source: Dmand AI Professional Profile Data
Dr. Ian H. Thorneycroft graduated from WashU Medicine
Dr. Thorneycroft graduated from WashU Medicine in 1976. Dr. Thorneycroft is a member of American College of Obstetricians and Gynecologists, ASRM and Pacific Coast Reproductive Society.
- Medical school
- Board certified in obstetrics & gynecology
- Board certified in reproductive endocrinology/infertility
Source: Dmand AI Professional Profile Data
Dr. Ian H. Thorneycroft accepts plans from 5 insurance carriers
Dr. Thorneycroft is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, Highmark and Blue Cross Blue Shield of Massachusetts. PPO plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Highmark
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Elevance
Plan types Dr. Thorneycroft accepts, by number of carriers
- PPO4
- HMO3
- Medicare3
- POS2
Source: Dmand AI Insurance Network Data
Sources for Dr. Ian H. Thorneycroft'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| 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. Ian H. Thorneycroft
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. Ian H. Thorneycroft's NPI number?
Dr. Ian H. Thorneycroft's NPI number is 1154378495. It was assigned on May 30, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ian H. Thorneycroft?
Dr. Ian H. Thorneycroft is a gynecology physician in Campbell, California. The primary specialty in the NPI Registry is Gynecology Physician (taxonomy code 207VG0400X).
Where does Dr. Ian H. Thorneycroft practice?
Dr. Thorneycroft practices at 900 E Hamilton Ave, Campbell, CA 95008. Dr. Thorneycroft's primary practice is Signify Health in Campbell, California. Dmand AI also links Dr. Thorneycroft to 1 group practice or clinic and 1 medical group.
What is Dr. Ian H. Thorneycroft's office phone number?
The practice phone on file for Dr. Thorneycroft is (469) 466-7007.
What is Dr. Ian H. Thorneycroft's medical license number?
Dr. Thorneycroft's Alabama license number on file is 15135, one of the licenses on file in 3 states.
Which states has Dr. Ian H. Thorneycroft been licensed in?
Dmand AI has state licenses on file for Dr. Thorneycroft in Alabama (1990 to 2025), California (2019 to 2025) and Louisiana (1983 to 2003).
What medical group is Dr. Ian H. Thorneycroft part of?
Dr. Thorneycroft is linked to Signify Health. Dmand AI links Dr. Thorneycroft to 1 more medical group.
Does Dr. Ian H. Thorneycroft accept Medicare?
Yes. CMS data shows Dr. Thorneycroft billed Medicare for 139 services in 2020.
Is Dr. Ian H. Thorneycroft board certified?
Yes. Dr. Thorneycroft is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
What services does Dr. Ian H. Thorneycroft bill to Medicare?
In 2020, Dr. Thorneycroft's most billed Medicare services were injected or infused drug (J1100), infusion or chemotherapy administration (96372) and office visit, established patient (99213).
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Where did Dr. Ian H. Thorneycroft go to medical school?
Dr. Thorneycroft graduated from WashU Medicine in 1976.
What drugs does Dr. Ian H. Thorneycroft prescribe most?
In 2019 Medicare Part D data, Dr. Thorneycroft's most prescribed drugs by claims were Amoxicillin-Clavulanate Potass, Azithromycin and Sulfamethoxazole-Trimethoprim.
Has Dr. Ian H. Thorneycroft received payments from drug or device companies?
CMS Open Payments shows $309 in general payments to Dr. Thorneycroft from 2 companies from 2018 to 2024. The largest total came from Novo Nordisk Inc.
How long has Dr. Ian H. Thorneycroft been practicing?
Dr. Thorneycroft graduated from medical school in 1976, 50 years ago.
Does Dr. Ian H. Thorneycroft do research?
Dmand AI links 44 publications to Dr. Thorneycroft.
Who does Dr. Ian H. Thorneycroft publish with?
Dr. Thorneycroft's most frequent co-authors are Maria Bustillo, MD (6 shared papers), John Buster, MD (5 shared papers) and Botros M. Rizk, MD (2 shared papers).
What insurance does Dr. Ian H. Thorneycroft accept?
Dr. Thorneycroft is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, Highmark and Blue Cross Blue Shield of Massachusetts. PPO plans come from the most carriers, 4. Check the plan with the practice before a visit.
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