Iris Rebecca Lowenberg-Lin, FNP
Family Nurse Practitioner · Mill Valley, CA
Iris Rebecca Lowenberg-Lin, FNP is a family nurse practitioner with a practice address in Mill Valley, California, and NPI 1952661985, issued on May 24, 2012. Check the license (California 21843, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Iris Rebecca Lowenberg-Lin
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 21843 CA
Self-reported in NPPES; status is on the state search - Practice location
- 750 Redwood Hwy Frontage RD Ste 1210, Mill Valley, CA 94941
- Phone
- (888) 663-6331
- Enumerated
- May 24, 2012
- Record last updated
- Aug 21, 2023
- Medicare enrollment
- Enrolled (PECOS I20121015000437); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 750 Redwood Hwy Frontage RD Ste 1210
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kathy Chang-Lipsenthal, MDInternal Medicine Physician1356340079
- Neha Choubey, DOFamily Medicine Physician1316575665
- David Cole, M.D.Family Medicine Physician1174919476
- Laura Collins, MDInternal Medicine Physician1619976339
Verify Iris Rebecca Lowenberg-Lin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 21843Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average family nurse practitioner in 2024
233 Medicare Part D claims for 79 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Albuterol Sulfate Hfa12 claims
- Atorvastatin Calcium11 claims
- Gabapentin11 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.
Bills Medicare through one group practice
- Marin Community ClinicNovato, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Iris Rebecca Lowenberg-Lin among 16,966 family nurse practitioner records in California
Iris Rebecca Lowenberg-Lin, FNP 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 2012, is newer than 21% of them.
- NPI issued2012 · 21% of these records are older, 76% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2012 · median 2019 among the 6,793 with a school on file
- 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).
11 family nurse practitioner records list a practice address in Mill Valley
They are 11 of the 653 NPPES records with a practice address in Mill Valley, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Mill Valley → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Susan Chappell, RN,MSN,FNP-BCMill Valley, CA 949411528493822
- Ginger Gakunga, APNMill Valley, CA 949411760790034
- Rachelle Goering, FNPMill Valley, CA 949411700087293
- Alexa HarrisMill Valley, CA 949411033004585
- Sarah Hubbell, DNP, FNP-CMill Valley, CA 949411134630684
- Julia IsenMill Valley, CA 949411427222967
- Kimberly Juarez, NPMill Valley, CA 949411629705249
- Elisa KangMill Valley, CA 949411518845825
Common questions
What is Iris Rebecca Lowenberg-Lin, FNP's NPI number?
Iris Rebecca Lowenberg-Lin, FNP's National Provider Identifier (NPI) is 1952661985, issued on May 24, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Iris Rebecca Lowenberg-Lin, FNP located?
The NPPES record lists a practice address at 750 Redwood Hwy Frontage RD Ste 1210, Mill Valley, CA, 94941. Phone: (888) 663-6331. Providers update this record themselves, so call before visiting.
How can I verify Iris Rebecca Lowenberg-Lin, FNP's license?
NPPES lists California license number 21843, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Iris Rebecca Lowenberg-Lin, FNP prescribe under Medicare Part D?
In 2024, Iris Rebecca Lowenberg-Lin, FNP had 233 Medicare Part D claims for 79 beneficiaries; 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.
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.