Maren Liv Pedersen, MD
Internal Medicine Physician · Palo Alto, CA
Maren Liv Pedersen, MD is an internal medicine physician with a practice address in Palo Alto, California, and NPI 1417021163, issued on Nov 17, 2006. Check the license (California G43586, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Maren Liv Pedersen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G43586 CA
Self-reported in NPPES; status is on the state search - Practice location
- 211 Quarry RD, Palo Alto, CA 94304
- Phone
- (650) 325-6778
- Enumerated
- Nov 17, 2006
- Record last updated
- Mar 27, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20081217000417); may accept Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1979
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 211 Quarry RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mary Ginn, NPFamily Nurse Practitioner1952503856
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- Riti Gupta, PHARMD, BCPSAmbulatory Care Pharmacist1760032189
- Matthew Hall, LCGCGenetic Counselor (M.S.)1609267582
- Rita Hamad, M.D.Family Medicine Physician1255614442
Verify Maren Liv Pedersen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G43586Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,524 Medicare Part D claims for 147 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium108 claims
- Levothyroxine Sodium71 claims
- Atorvastatin Calcium70 claims
- Amlodipine Besylate67 claims
- Synthroid46 claims
- Escitalopram Oxalate41 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: $42.55
2 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Maren Liv Pedersen among 17,696 internal medicine physician records in California
Maren Liv Pedersen, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1979 · median 2004 among the 11,065 with a school on file
- Record last updated2013 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
187 internal medicine physician records list a practice address in Palo Alto
They are 187 of the 7,617 NPPES records with a practice address in Palo Alto, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Palo Alto → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Susan Frayne, MD, MPHPalo Alto, CA 943041952314890
- James Hallenbeck, MDPalo Alto, CA 943041316982358
- Rhonda Hamilton, M.D.Palo Alto, CA 943041225063241
Common questions
What is Maren Liv Pedersen, MD's NPI number?
Maren Liv Pedersen, MD's National Provider Identifier (NPI) is 1417021163, issued on Nov 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Maren Liv Pedersen, MD located?
The NPPES record lists a practice address at 211 Quarry RD, Palo Alto, CA, 94304. Phone: (650) 325-6778. Providers update this record themselves, so call before visiting.
How can I verify Maren Liv Pedersen, MD's license?
NPPES lists California license number G43586, 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 Maren Liv Pedersen, MD prescribe under Medicare Part D?
In 2024, Maren Liv Pedersen, MD had 1,524 Medicare Part D claims for 147 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.