Dr. Zan Siddiqi, MD
- Part D claims, 2024
- 329
- Publications
- 2
- Industry payments
- $555
- State license
- 1
- Year NPI issued
- 2023
- Practice address
- 1215 E Michigan Ave, Lansing, MI 48912
- Practice phone
- Call (517) 364-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
UM Health-Sparrow Lansing Campus
Lansing, Michigan
Find Dr. Siddiqi'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. Zan Siddiqi is an internist in Lansing, Michigan
Dr. Siddiqi practices at UM Health-Sparrow Lansing Campus in Lansing, Michigan.
Dr. Siddiqi's NPI, 1841980513, was assigned on May 8, 2023. Dr. Siddiqi holds Michigan license 4351051859.
- NPI
- 1841980513NPI Registry (opens in a new tab)
- NPI enumeration date
- May 8, 2023
- NPI status
- Active
- Practice phone
- (517) 364-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Zan Siddiqi practices at UM Health-Sparrow Lansing Campus in Lansing, Michigan
Dr. Siddiqi's primary practice is UM Health-Sparrow Lansing Campus, at 1215 E Michigan Ave, Lansing, MI 48912 in Ingham County. The practice phone is (517) 364-6000.
- UM Health-Sparrow Lansing Campus1215 E Michigan Ave, Lansing, MI 48912 · Ingham CountyPhone(517) 364-6000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Zan Siddiqi is affiliated with 1 site of care
Dr. Siddiqi's primary practice is UM Health-Sparrow Lansing Campus in Lansing, Michigan.
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Zan Siddiqi's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Siddiqi practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UM Health-Sparrow Lansing Campus | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Zan Siddiqi is one of 4,804 internists in Michigan
Internal medicine is Dr. Siddiqi's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Siddiqi is licensed in Michigan.
Specialties and state licenses
- Internal medicine, MichiganPrimary
Internists near Dr. Siddiqi
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. Zan Siddiqi's patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Dr. Siddiqi's median patient age at 69, with 40% women.
Dr. Siddiqi's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women40%
- Men60%
Source: Dmand AI Patient Panel Data
Dr. Zan Siddiqi wrote 329 Medicare Part D claims in 2024
In 2024, Dr. Siddiqi wrote 329 Medicare Part D claims for 68 patients. 85% of them were for generic drugs. CMS names the drug for 94 of them, across 6 drugs with 11 or more claims each, at $1,382 in total drug cost.
Dr. Siddiqi's Part D claims by kind of drug, 2024
- Generic281 claims85%
- Brand-name48 claims15%
Dr. Siddiqi's most prescribed drugs by claims, 2024
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. Siddiqi's Part D claims, 2024
- Antibiotics4%12 of 329 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
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Dr. Zan Siddiqi has 2 publications on record
Dmand AI links 2 papers to Dr. Siddiqi in 2025. Dr. Siddiqi's most frequent co-authors are Sarah Paria Alizadeh, Selwan O. Edward, MD and Harith Ghnaima, MD.
Dr. Siddiqi's most frequent co-authors
- Sarah Paria Alizadeh1 shared paper
- Selwan O. Edward, MD1 shared paper
- Harith Ghnaima, MD1 shared paper
Recent publications by Dr. Siddiqi
See who Dr. Siddiqi researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Siddiqi 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. Zan Siddiqi received $555 in industry payments from 2024 to 2025
CMS Open Payments shows 20 general payments to Dr. Siddiqi from 15 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $128.
General payments to Dr. Siddiqi by program year, 2024 to 2025
Companies that paid Dr. Siddiqi the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Zan Siddiqi'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 Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| 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) |
| 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. Zan Siddiqi
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. Zan Siddiqi's NPI number?
Dr. Zan Siddiqi's NPI number is 1841980513. It was assigned on May 8, 2023, and it is active in the NPI Registry.
What kind of doctor is Dr. Zan Siddiqi?
Dr. Zan Siddiqi is an internist in Lansing, Michigan. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Zan Siddiqi practice?
Dr. Siddiqi practices at 1215 E Michigan Ave, Lansing, MI 48912. Dr. Siddiqi's primary practice is UM Health-Sparrow Lansing Campus in Lansing, Michigan.
What is Dr. Zan Siddiqi's office phone number?
The practice phone on file for Dr. Siddiqi is (517) 364-6000.
What is Dr. Zan Siddiqi's medical license number?
Dr. Siddiqi holds Michigan license 4351051859.
What drugs does Dr. Zan Siddiqi prescribe most?
In 2024 Medicare Part D data, Dr. Siddiqi's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Gabapentin.
Has Dr. Zan Siddiqi received payments from drug or device companies?
CMS Open Payments shows $555 in general payments to Dr. Siddiqi from 15 companies from 2024 to 2025. The largest total came from Amgen Inc.
How long has Dr. Zan Siddiqi been practicing?
Dr. Siddiqi's NPI was assigned in 2023.
Does Dr. Zan Siddiqi do research?
Dmand AI links 2 publications to Dr. Siddiqi.
Who does Dr. Zan Siddiqi publish with?
Dr. Siddiqi's most frequent co-authors are Sarah Paria Alizadeh (1 shared paper), Selwan O. Edward, MD (1 shared paper) and Harith Ghnaima, MD (1 shared paper).
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