NPPES file of Aug 9, 2026

Emily Ruth Adams-Piper, M.D.

Obstetrics & Gynecology Physician · Santa Clara, CA

Emily Ruth Adams-Piper, M.D. is an obstetrics & gynecology physician with a practice address in Santa Clara, California, and NPI 1871878678, issued on Oct 13, 2011. Check the license (California A118574, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1871878678
Name
Emily Ruth Adams-Piper
Credential
M.D.
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
A118574 CA
Self-reported in NPPES; status is on the state search
Practice location
710 Lawrence Expy Dept 390, Santa Clara, CA 95051
Phone
(408) 851-3842
Enumerated
Oct 13, 2011
Record last updated
Feb 11, 2022
Medicare enrollment
Enrolled (PECOS I20150829000030); accepts Medicare assignment
Medical or professional school
Boston University School Of Medicine, 2010
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 710 Lawrence Expy Dept 390

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Pauline Yu, M.D.Obstetrics & Gynecology Physician1588846133

Verify Emily Ruth Adams-Piper in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A118574
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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66% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024

274 Medicare Part D claims for 135 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 15 claims were for opioids.

  1. Emily Adams-Piper274
  2. Specialty average165

Most prescribed

  1. Estradiol51 claims
  2. Myrbetriq47 claims
  3. Trospium Chloride37 claims
  4. Nitrofurantoin Mono-Macro19 claims
  5. Cephalexin18 claims
  6. Mirabegron Er16 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $1,516.00

2 payments; by number, the most common kind was education; the largest payer was Intuitive Surgical, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Emily Adams-Piper$1,516.00
  2. Specialty average$1,030.61

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Permanente Medical Group IncSan Jose, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Emily Ruth Adams-Piper among 5,088 obstetrics & gynecology physician records in California

Emily Ruth Adams-Piper, M.D. is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 72% of them.

  • NPI issued2011 · 72% of these records are older, 25% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 53% of these records are
  • Graduated2010 · median 2004 among the 2,700 with a school on file
  • Record last updated2022 · 64% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

53 obstetrics & gynecology physician records list a practice address in Santa Clara

They are 53 of the 3,436 NPPES records with a practice address in Santa Clara, and 5,088 obstetrics & gynecology physician records in California.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Shiva Avari, MDSanta Clara, CA 950511295812121
  2. Neal Frager, MDSanta Clara, CA 950511538246483
  3. Faezeh Ghaffari, MDSanta Clara, CA 950511952488892
  4. Andrea Hutchinson, MDSanta Clara, CA 950511013094945
  5. David Levin, MDSanta Clara, CA 950511881771723
  6. Bernadette Macart, MDSanta Clara, CA 950511144307000
  7. Valerie Maloney, MDSanta Clara, CA 950511386722957
  8. Philip Miller, MDSanta Clara, CA 950511275610123

Common questions

What is Emily Ruth Adams-Piper, M.D.'s NPI number?

Emily Ruth Adams-Piper, M.D.'s National Provider Identifier (NPI) is 1871878678, issued on Oct 13, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Emily Ruth Adams-Piper, M.D. located?

The NPPES record lists a practice address at 710 Lawrence Expy Dept 390, Santa Clara, CA, 95051. Phone: (408) 851-3842. Providers update this record themselves, so call before visiting.

How can I verify Emily Ruth Adams-Piper, M.D.'s license?

NPPES lists California license number A118574, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Emily Ruth Adams-Piper, M.D. prescribe under Medicare Part D?

In 2024, Emily Ruth Adams-Piper, M.D. had 274 Medicare Part D claims for 135 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.