NPPES file of Aug 9, 2026

Christen D. Greenfield, NP-C

Family Nurse Practitioner · Woodside, CA

Christen D. Greenfield, NP-C is a family nurse practitioner with a practice address in Woodside, California, and NPI 1770716078, issued on Sep 2, 2009. Check the license (California 19652, as entered in NPPES) with the California board that licenses this profession; 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
1770716078
Name
Christen D. Greenfield
Credential
NP-C
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
19652 CA
Self-reported in NPPES; status is on the state search
Practice location
2995 Woodside RD Ste 300, Woodside, CA 94062
Phone
(650) 275-2326
Enumerated
Sep 2, 2009
Record last updated
Jun 1, 2023
Fax
(650) 403-1900
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →

Also registered at 2995 Woodside RD Ste 300

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

  1. Adam Berns, MDAddiction Psychiatry Physician1669835047

Verify Christen D. Greenfield in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 19652    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
Find the California license search

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92% fewer Medicare Part D claims than the average family nurse practitioner in 2024

104 Medicare Part D claims, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Christen Greenfield104
  2. Specialty average1,305

Most prescribed

  1. Duloxetine Hcl24 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.

Christen D. Greenfield among 16,966 family nurse practitioner records in California

Christen D. Greenfield, NP-C is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 15% of them.

  • NPI issued2009 · 15% of these records are older, 83% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileNo · 40% of these records are
  • Record last updated2023 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1 family nurse practitioner record lists a practice address in Woodside

They are 1 of the 52 NPPES records with a practice address in Woodside, and 16,966 family nurse practitioner records in California.

All 16,966 in California → Every provider in Woodside → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Jessica Beckmeyer, FNPRedwood City, CA 940621568766657
  2. Arifa Buksh, FNPRedwood City, CA 940621477184778
  3. Linda Cadelago, RN, FNP, PA-CRedwood City, CA 940621124386396
  4. Kathe Gibboney, FNPRedwood City, CA 940621275860470
  5. Helena LeeRedwood City, CA 940621013622299
  6. Patricia McMorrow, FNP-BCRedwood City, CA 940621689072134
  7. Paige Wilcox, FNPRedwood City, CA 940621801568043
  8. Lauren Wilkinson, FNP-CRedwood City, CA 940621669827820

Common questions

What is Christen D. Greenfield, NP-C's NPI number?

Christen D. Greenfield, NP-C's National Provider Identifier (NPI) is 1770716078, issued on Sep 2, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Christen D. Greenfield, NP-C located?

The NPPES record lists a practice address at 2995 Woodside RD Ste 300, Woodside, CA, 94062. Phone: (650) 275-2326. Providers update this record themselves, so call before visiting.

How can I verify Christen D. Greenfield, NP-C's license?

NPPES lists California license number 19652, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Christen D. Greenfield, NP-C prescribe under Medicare Part D?

In 2024, Christen D. Greenfield, NP-C had 104 Medicare Part D claims; the average among family nurse practitioner prescribers was 1,305. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.