Dr. Kreshnik Zejnullahu, MD
- Medicare services, 2024
- 307
- Medicare patients, 2024
- 88
- Part D claims, 2024
- 73
- Publications
- 23
- MIPS score, 2024
- 100
- Practice address
- 450 Stanyan St, San Francisco, CA 94117
- Practice phone
- Call (415) 353-4739
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
UCSF St Mary's Hospital
San Francisco, California
Find Dr. Zejnullahu's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Kreshnik Zejnullahu is an internist in San Francisco, California
Dr. Zejnullahu practices at UCSF St Mary's Hospital in San Francisco, California.
Dr. Zejnullahu's NPI, 1326465444, was assigned on March 26, 2014. Dr. Zejnullahu graduated from University of Massachusetts Medical School in 2014. Dr. Zejnullahu's California license number on file is A140878.
- NPI
- 1326465444NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6305138389
- NPI enumeration date
- March 26, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (415) 353-4739
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kreshnik Zejnullahu practices at UCSF St Mary's Hospital in San Francisco, California
Dr. Zejnullahu's primary practice is UCSF St Mary's Hospital, at 450 Stanyan St, San Francisco, CA 94117 in San Francisco County. The practice phone is (415) 353-4739.
- UCSF St Mary's Hospital450 Stanyan St, San Francisco, CA 94117 · San Francisco CountyPhone(415) 353-4739
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Kreshnik Zejnullahu is affiliated with 5 sites of care and 4 medical groups
Dr. Zejnullahu's primary practice is UCSF St Mary's Hospital in San Francisco, California. Dr. Zejnullahu is also affiliated with UCSF Helen Diller Medical Center at Parnassus Heights. The medical group on file is UCSF Pediatrics. Dmand AI also links Dr. Zejnullahu to 1 more hospital, 3 medical groups and 2 group practices and clinics, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Kreshnik Zejnullahu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zejnullahu practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCSF St Mary's Hospital | Available with a free account |
| +4 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Kreshnik Zejnullahu is one of 16,751 internists in California
Internal medicine is Dr. Zejnullahu's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Zejnullahu is board certified in internal medicine by the American Board of Internal Medicine. Dr. Zejnullahu has a license on file in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acute diabetes, cardiac arrhythmia, cellulitis, chronic inflammatory bowel disease (IBD), chronic kidney disease, circulatory problems in extremities, electrolyte disorders and gastrointestinal bleeding among the conditions Dr. Zejnullahu treats.
Internists near Dr. Zejnullahu
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Kreshnik Zejnullahu billed Medicare for 307 services in 2024
CMS data shows 307 Medicare services from Dr. Zejnullahu across 5 procedure codes in 2024, for 88 Medicare patients. Medicare paid $25,979 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Zejnullahu's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4352024: 27038%
- Other services
- 2023: 142024: 37164%
Dr. Zejnullahu compared with the California median for internists, 2024
- Dr. Zejnullahu
- California median
- Medicare services
- 307vs 36115% below
- Medicare patients
- 88vs 15142% below
- Part D claims
- 23vs 42195% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Zejnullahu's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Zejnullahu and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kreshnik Zejnullahu treated 88 Medicare patients in 2024, average age 73
CMS counts 88 Medicare patients who saw Dr. Zejnullahu in 2024. The largest group is 65 to 74, with 26 patients. 75% of them have high blood pressure, and 73% have high cholesterol. 58% are also on Medicaid. Their average risk score is 3.05, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Zejnullahu's median patient age at 72, with 40% women.
Dr. Zejnullahu's Medicare patients by age, 2024
Dr. Zejnullahu's Medicare patients by sex, 2024
- Women4855%
- Men4045%
Chronic conditions among Dr. Zejnullahu's Medicare patients, 2024
- High blood pressure75%
- High cholesterol73%
- Arthritis50%
- Chronic kidney disease48%
- Diabetes48%
- Heart failure48%
- Atrial fibrillation42%
- Anxiety39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zejnullahu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women40%
- Men56%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kreshnik Zejnullahu wrote 73 Medicare Part D claims in 2024
In 2024, Dr. Zejnullahu wrote 73 Medicare Part D claims for 30 patients. 77% of them were for generic drugs. CMS names the drug for 23 of them, across 2 drugs with 11 or more claims each, at $320 in total drug cost.
Dr. Zejnullahu's Part D claims by kind of drug, 2024
- Generic56 claims77%
- Brand-name17 claims23%
Dr. Zejnullahu's most prescribed drugs by claims, 2018
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Zejnullahu's Part D claims, 2024
- Antibiotics18%13 of 73 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Kreshnik Zejnullahu scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Zejnullahu for performance year 2024, reported as part of a group. Dr. Zejnullahu accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Zejnullahu's MIPS scores, performance year 2024
- 100of 100Final score
- 95of 100Quality
- 40of 100Improvement Activities
- 81of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Kreshnik Zejnullahu has 23 publications on record
Dmand AI links 23 papers to Dr. Zejnullahu, published from 2006 to 2020. 2012 was the busiest year, with 4. The most frequent topics are Cell Line, Tumor, Lung Neoplasms and Drug Resistance, Neoplasm. Dr. Zejnullahu has published most often in Cancer Res. Dr. Zejnullahu's most frequent co-authors are Rahul R. Aggarwal, MD, Michelle Sarah Mourad, MD and Lekshmi Santhosh, MD.
Dr. Zejnullahu's papers by year, 2007 to 2020
Topics Dr. Zejnullahu writes about most
- Cell Line, Tumor
- Lung Neoplasms
- Drug Resistance, Neoplasm
- Antineoplastic Agents
- ErbB Receptors
- Carcinoma, Non-Small-Cell Lung
- Gefitinib
- Quinazolines
Dr. Zejnullahu's most frequent co-authors
- Rahul R. Aggarwal, MD2 shared papers
- Michelle Sarah Mourad, MD2 shared papers
- Lekshmi Santhosh, MD2 shared papers
Recent publications by Dr. Zejnullahu
Clin Genitourin Cancer
See who Dr. Zejnullahu researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Zejnullahu works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Kreshnik Zejnullahu received $15 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Zejnullahu from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Mallinckrodt LLC paid the most, $15.
Companies that paid Dr. Zejnullahu the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kreshnik Zejnullahu graduated from University of Massachusetts Medical School
Dr. Zejnullahu graduated from University of Massachusetts Medical School in 2014.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Kreshnik Zejnullahu accepts plans from 5 insurance carriers
Dr. Zejnullahu is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- United Healthcare
- CMS Medicare
Plan types Dr. Zejnullahu accepts, by number of carriers
- Medicare4
- PPO4
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Kreshnik Zejnullahu's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Kreshnik Zejnullahu
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Kreshnik Zejnullahu's NPI number?
Dr. Kreshnik Zejnullahu's NPI number is 1326465444. It was assigned on March 26, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Kreshnik Zejnullahu?
Dr. Kreshnik Zejnullahu is an internist in San Francisco, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Kreshnik Zejnullahu practice?
Dr. Zejnullahu practices at 450 Stanyan St, San Francisco, CA 94117. Dr. Zejnullahu's primary practice is UCSF St Mary's Hospital in San Francisco, California. Dmand AI also links Dr. Zejnullahu to 1 hospital, 3 medical groups and 2 group practices and clinics.
What is Dr. Kreshnik Zejnullahu's office phone number?
The practice phone on file for Dr. Zejnullahu is (415) 353-4739.
What is Dr. Kreshnik Zejnullahu's medical license number?
Dr. Zejnullahu's California license number on file is A140878.
Which hospitals is Dr. Kreshnik Zejnullahu affiliated with?
Dr. Zejnullahu is affiliated with UCSF Helen Diller Medical Center at Parnassus Heights. Dmand AI links Dr. Zejnullahu to 1 more hospital.
What medical group is Dr. Kreshnik Zejnullahu part of?
Dr. Zejnullahu is linked to UCSF Pediatrics. Dmand AI links Dr. Zejnullahu to 3 more medical groups.
Does Dr. Kreshnik Zejnullahu accept Medicare?
Yes. CMS data shows Dr. Zejnullahu billed Medicare for 307 services in 2024, and Dr. Zejnullahu accepts Medicare assignment.
What is Dr. Kreshnik Zejnullahu's MIPS score?
Dr. Zejnullahu's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Kreshnik Zejnullahu see?
CMS counts 88 Medicare patients who saw Dr. Zejnullahu in 2024, with an average age of 73.
Show 9 more questionsShow fewer questions
Is Dr. Kreshnik Zejnullahu board certified?
Yes. Dr. Zejnullahu is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Kreshnik Zejnullahu bill to Medicare?
In 2024, Dr. Zejnullahu's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and medicare service (G0316).
Where did Dr. Kreshnik Zejnullahu go to medical school?
Dr. Zejnullahu graduated from University of Massachusetts Medical School in 2014.
What drugs does Dr. Kreshnik Zejnullahu prescribe most?
In 2018 Medicare Part D data, Dr. Zejnullahu's most prescribed drugs by claims were Atorvastatin Calcium and Furosemide.
Has Dr. Kreshnik Zejnullahu received payments from drug or device companies?
CMS Open Payments shows $15 in general payments to Dr. Zejnullahu from 1 company from 2017 to 2017. The largest total came from Mallinckrodt LLC.
How long has Dr. Kreshnik Zejnullahu been practicing?
Dr. Zejnullahu graduated from medical school in 2014, 12 years ago.
Does Dr. Kreshnik Zejnullahu do research?
Dmand AI links 23 publications to Dr. Zejnullahu, published from 2006 to 2020.
Who does Dr. Kreshnik Zejnullahu publish with?
Dr. Zejnullahu's most frequent co-authors are Rahul R. Aggarwal, MD (2 shared papers), Michelle Sarah Mourad, MD (2 shared papers) and Lekshmi Santhosh, MD (2 shared papers).
What insurance does Dr. Kreshnik Zejnullahu accept?
Dr. Zejnullahu is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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