Kristin Geisser Christensen, MD
Internal Medicine Physician · Philadelphia, PA
Kristin Geisser Christensen, MD is an internal medicine physician with a practice address in Philadelphia, Pennsylvania, and NPI 1407061815, issued on May 11, 2007. Check the license (Pennsylvania MD439833, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Kristin Geisser Christensen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- MD439833 PA
MT190395 PA
Self-reported in NPPES; status is on the state search - Practice location
- 3701 Market St, Philadelphia, PA 19104
- Phone
- (215) 662-2250
- Enumerated
- May 11, 2007
- Record last updated
- Apr 4, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (215) 615-3995
- Medicare enrollment
- Enrolled (PECOS I20100802000185); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 3701 Market St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Wileen Alexis, DNP, CRNPPrimary Care Nurse Practitioner1548038987
- Anthony AngueiraInternal Medicine Physician1174260095
- Ayisha Arshad, FNP-BCFamily Nurse Practitioner1811376874
- Michael Baime, MDInternal Medicine Physician1972530871
- Michelle Barcus, CNMAdvanced Practice Midwife1538475124
- Rebecca Berlin, CRNPAdult Health Nurse Practitioner1194832584
Verify Kristin Geisser Christensen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD439833Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3% more Medicare Part D claims than the average internal medicine physician in 2024
3,262 Medicare Part D claims for 401 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 39 claims were for opioids.
Most prescribed
- Atorvastatin Calcium265 claims
- Rosuvastatin Calcium179 claims
- Levothyroxine Sodium138 claims
- Amlodipine Besylate133 claims
- Losartan Potassium80 claims
- Metoprolol Succinate74 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
- Trustees OF The University OF PennsylvaniaPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kristin Geisser Christensen among 7,300 internal medicine physician records in Pennsylvania
Kristin Geisser Christensen, MD is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 36% of them.
- NPI issued2007 · 36% of these records are older, 57% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2007 · median 2008 among the 4,208 with a school on file
- Record last updated2012 · 56% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,855 internal medicine physician records list a practice address in Philadelphia
They are 1,855 of the 42,849 NPPES records with a practice address in Philadelphia, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in Philadelphia → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Amy Behrman, MDPhiladelphia, PA 191041851331870
- Martin Bohnenkamp, MDPhiladelphia, PA 191041770528259
- John Bruza, MDPhiladelphia, PA 191041093758310
- Jill Clemmer, MDPhiladelphia, PA 191041477594562
- John Flamma, MDPhiladelphia, PA 191041477500296
- Kevin Fosnocht, MDPhiladelphia, PA 191041003842709
- William Gilhool, DOPhiladelphia, PA 191041982606919
- Bruce Kinosian, MDPhiladelphia, PA 191041871536177
Common questions
What is Kristin Geisser Christensen, MD's NPI number?
Kristin Geisser Christensen, MD's National Provider Identifier (NPI) is 1407061815, issued on May 11, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Kristin Geisser Christensen, MD located?
The NPPES record lists a practice address at 3701 Market St, Philadelphia, PA, 19104. Phone: (215) 662-2250. Providers update this record themselves, so call before visiting.
How can I verify Kristin Geisser Christensen, MD's license?
NPPES lists Pennsylvania license number MD439833, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kristin Geisser Christensen, MD prescribe under Medicare Part D?
In 2024, Kristin Geisser Christensen, MD had 3,262 Medicare Part D claims for 401 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.