Antibodies, Monoclonal, HumanizedAntineoplastic Agents, ImmunologicalLymphatic Metastasis
Dr. Anthony Stewart Stack II, DO
NPI1528562832PAC ID5496006298
- Medicare services, 2024
- 285
- Medicare patients, 2024
- 143
- Part D claims, 2024
- 208
- Publications
- 2
- Hospital affiliations
- 4
- Practice address
- 620 10th N St, Saint Petersburg, FL 33705
- Practice phone
- Call (727) 281-9065
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Baycare Medical Group, Inc.
Saint Petersburg, Florida
Find Dr. Stack'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. Anthony Stewart Stack II is an internist in Saint Petersburg, Florida
Dr. Stack practices at Baycare Medical Group, Inc. in Saint Petersburg, Florida.
Dr. Stack's NPI, 1528562832, was assigned on March 21, 2018. Dr. Stack graduated from Lake Erie College of Osteopathic Medicine - Bradenton in 2018. Dr. Stack holds Florida license UO5932.
NPI and contact details
- NPI
- 1528562832NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5496006298
- NPI enumeration date
- March 21, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (727) 281-9065
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Anthony Stewart Stack II practices at Baycare Medical Group, Inc. in Saint Petersburg, Florida
Dr. Stack's primary practice is Baycare Medical Group, Inc., at 620 10th N St, Saint Petersburg, FL 33705 in Pinellas County. The practice phone is (727) 281-9065.
- Baycare Medical Group, Inc.620 10th N St, Saint Petersburg, FL 33705 · Pinellas CountyPhone(727) 281-9065
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Anthony Stewart Stack II is affiliated with 6 sites of care and 1 medical group
Dr. Stack's primary practice is Baycare Medical Group, Inc. in Saint Petersburg, Florida. Dr. Stack is also affiliated with BayCare St. Joseph's Hospital. The medical group on file is BayCare Medical Group. Dmand AI also links Dr. Stack to 3 more hospitals and 1 group practice or clinic, each named with a free account.
Baycare Medical Group, Inc.Primary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Anthony Stewart Stack II's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Stack practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Baycare Medical Group, Inc. | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Anthony Stewart Stack II is one of 9,009 internists in Florida
Internal medicine is Dr. Stack's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Stack is board certified in internal medicine by the American Board of Internal Medicine. Dr. Stack is licensed in Florida.
Specialties and state licenses
- Internal medicine, FloridaPrimary
Internists near Dr. Stack
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. Anthony Stewart Stack II billed Medicare for 285 services in 2024
CMS data shows 285 Medicare services from Dr. Stack across 4 procedure codes in 2024, for 143 Medicare patients. Medicare paid $19,071 for them. Every service was in an office.
Medicare services, 2024285
Medicare patients143
Paid by Medicare$19,071
Procedure codes4
Dr. Stack's Medicare services by type, 2024
- Office and hospital visits176
- Other services109
Dr. Stack compared with the Florida median for internists, 2024
- Dr. Stack
- Florida median
- Medicare services
- 285vs 55549% below
- Medicare patients
- 143vs 21533% below
- Part D claims
- 97vs 46679% below
Medians across 8,488 internists in Florida with Dmand AI profiles that report each measure.
Dr. Stack'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. Stack and other internists in Florida.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Anthony Stewart Stack II treated 143 Medicare patients in 2024, average age 77
CMS counts 143 Medicare patients who saw Dr. Stack in 2024. The largest group is 65 to 74, with 58 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.10, 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. Stack's median patient age at 73, with 58% women.
Medicare patients, 2024143
Average age77
Average risk score2.10
Dr. Stack's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Stack's Medicare patients by sex, 2024
- Women8056%
- Men6344%
Chronic conditions among Dr. Stack's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis59%
- Ischemic heart disease45%
- Cancer43%
- Chronic kidney disease42%
- Mood disorders38%
- Depression36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Stack's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Anthony Stewart Stack II wrote 208 Medicare Part D claims in 2024
In 2024, Dr. Stack wrote 208 Medicare Part D claims for 92 patients. 79% of them were for generic drugs. CMS names the drug for 97 of them, across 5 drugs with 11 or more claims each, at $3,159 in total drug cost. In 2023, CMS named 17 claims across 1 drug.
Part D claims, 2024208
Drugs named by CMS5
Total drug cost$3,159
Part D patients92
Dr. Stack's Part D claims by kind of drug, 2024
- Generic164 claims79%
- Brand-name44 claims21%
Dr. Stack'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 172024: 97471%
Drugs named by CMS: 5 in 2024, 1 in 2023.
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. Anthony Stewart Stack II offers telehealth to Medicare patients
Dr. Stack accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Stack as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Anthony Stewart Stack II has 2 publications on record
Dmand AI links 2 papers to Dr. Stack in 2020. Dr. Stack's most frequent co-authors are Michael K. Chahin, DO, Marwan Elahi Shaikh, MD and Anwer Mukhtar Siddiqi, MD.
Papers2
Dr. Stack's most frequent co-authors
- Michael K. Chahin, DO1 shared paper
- Marwan Elahi Shaikh, MD1 shared paper
- Anwer Mukhtar Siddiqi, MD1 shared paper
Recent publications by Dr. Stack
See who Dr. Stack researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Stack 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. Anthony Stewart Stack II received $3,386 in industry payments from 2019 to 2025
CMS Open Payments shows 69 general payments to Dr. Stack from 26 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 83% of the total. Bristol-Myers Squibb Company paid the most, $560.
General payments to Dr. Stack by program year, 2019 to 2025
General payments to Dr. Stack by kind, 2019 to 2025
$3.4Kin total
- Food and beverage$2,82683%
- Education$56017%
Companies that paid Dr. Stack the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Anthony Stewart Stack II graduated from Lake Erie College of Osteopathic Medicine - Bradenton
Dr. Stack graduated from Lake Erie College of Osteopathic Medicine - Bradenton in 2018.
- Medical school
- Board certified in internal medicine
- Board certified in 2024 - 2026
Source: Dmand AI Professional Profile Data
Dr. Anthony Stewart Stack II accepts plans from 16 insurance carriers
Dr. Stack is in network with 16 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Aspirus Health Plan
- Blue Cross Blue Shield of Massachusetts
- Humana
- +8 more carriersWith a free account
Plan types Dr. Stack accepts, by number of carriers
- PPO11
- Medicare9
- HMO7
- POS5
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Anthony Stewart Stack II'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) |
| 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. Anthony Stewart Stack II
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. Anthony Stewart Stack II's NPI number?
Dr. Anthony Stewart Stack II's NPI number is 1528562832. It was assigned on March 21, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Anthony Stewart Stack II?
Dr. Anthony Stewart Stack II is an internist in Saint Petersburg, Florida. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Anthony Stewart Stack II practice?
Dr. Stack practices at 620 10th N St, Saint Petersburg, FL 33705. Dr. Stack's primary practice is Baycare Medical Group, Inc. in Saint Petersburg, Florida. Dmand AI also links Dr. Stack to 3 hospitals and 1 group practice or clinic.
What is Dr. Anthony Stewart Stack II's office phone number?
The practice phone on file for Dr. Stack is (727) 281-9065.
What is Dr. Anthony Stewart Stack II's medical license number?
Dr. Stack holds Florida license UO5932.
Which hospitals is Dr. Anthony Stewart Stack II affiliated with?
Dr. Stack is affiliated with BayCare St. Joseph's Hospital. Dmand AI links Dr. Stack to 3 more hospitals.
What medical group is Dr. Anthony Stewart Stack II part of?
Dr. Stack is linked to BayCare Medical Group.
Does Dr. Anthony Stewart Stack II accept Medicare?
Yes. CMS data shows Dr. Stack billed Medicare for 285 services in 2024, and Dr. Stack accepts Medicare assignment.
Does Dr. Anthony Stewart Stack II offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Stack as offering telehealth services.
How many Medicare patients does Dr. Anthony Stewart Stack II see?
CMS counts 143 Medicare patients who saw Dr. Stack in 2024, with an average age of 77.
Show 9 more questionsShow fewer questions
Is Dr. Anthony Stewart Stack II board certified?
Yes. Dr. Stack is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Anthony Stewart Stack II bill to Medicare?
In 2024, Dr. Stack's most billed Medicare services were medicare service (G2211), office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. Anthony Stewart Stack II go to medical school?
Dr. Stack graduated from Lake Erie College of Osteopathic Medicine - Bradenton in 2018.
What drugs does Dr. Anthony Stewart Stack II prescribe most?
In 2024 Medicare Part D data, Dr. Stack's most prescribed drugs by claims were Letrozole, Tamoxifen Citrate and Anastrozole.
Has Dr. Anthony Stewart Stack II received payments from drug or device companies?
CMS Open Payments shows $3,386 in general payments to Dr. Stack from 26 companies from 2019 to 2025. The largest total came from Bristol-Myers Squibb Company.
How long has Dr. Anthony Stewart Stack II been practicing?
Dr. Stack graduated from medical school in 2018, 8 years ago.
Does Dr. Anthony Stewart Stack II do research?
Dmand AI links 2 publications to Dr. Stack.
Who does Dr. Anthony Stewart Stack II publish with?
Dr. Stack's most frequent co-authors are Michael K. Chahin, DO (1 shared paper), Marwan Elahi Shaikh, MD (1 shared paper) and Anwer Mukhtar Siddiqi, MD (1 shared paper).
What insurance does Dr. Anthony Stewart Stack II accept?
Dr. Stack is in network with 16 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
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