Dr. Tammy A. Parker, MD
- Medicare services, 2024
- 39
- Medicare patients, 2024
- 46
- Part D claims, 2024
- 34
- Hospital affiliations
- 2
- Medical groups
- 6
- Practice address
- 100 Jackson Pike, Gallipolis, OH 45631
- Practice phone
- Call (740) 446-5030
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Tammy A. Parker is an emergency medicine physician in Gallipolis, Ohio
Dr. Parker practices at Holzer Gallipolis in Gallipolis, Ohio, part of Holzer Health System.
Dr. Parker's NPI, 1639259880, was assigned on October 16, 2006. Dr. Parker graduated from Medical College of Wisconsin in 1996. Dr. Parker holds Ohio license 35076465.
- NPI
- 1639259880NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0840237780
- NPI enumeration date
- October 16, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (740) 446-5030
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Tammy A. Parker practices at Holzer Gallipolis in Gallipolis, Ohio
Dr. Parker's primary practice is Holzer Gallipolis, at 100 Jackson Pike, Gallipolis, OH 45631 in Gallia County. The practice phone is (740) 446-5030.
- Holzer Gallipolis100 Jackson Pike, Gallipolis, OH 45631 · Gallia CountyPhone(740) 446-5030
Source: Dmand AI Affiliation Data
Dr. Tammy A. Parker is affiliated with 2 sites of care and 6 medical groups
Dr. Parker's primary practice is Holzer Gallipolis in Gallipolis, Ohio, part of Holzer Health System. Dr. Parker is also affiliated with Lima Memorial Health System. The medical group on file is Holzer Health System. Dmand AI also links Dr. Parker to 5 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Tammy A. Parker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Parker practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Holzer Gallipolis | Available with a free account |
| +1 more site and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Tammy A. Parker is one of 2,401 emergency medicine physicians in Ohio
Emergency medicine is Dr. Parker's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Parker is licensed in Ohio.
Specialties and state licenses
- Emergency medicine, OhioPrimary
Emergency medicine physicians near Dr. Parker
Counts of emergency medicine physicians 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. Tammy A. Parker billed Medicare for 39 services in 2024
CMS data shows 39 Medicare services from Dr. Parker across 2 procedure codes in 2024, for 46 Medicare patients. Medicare paid $4,177 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Parker's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2942024: 3987%
- Tests and treatments
- 2023: 1992024: 0100%
Dr. Parker compared with the Ohio median for emergency medicine physicians, 2024
- Dr. Parker
- Ohio median
- Medicare services
- 39vs 26685% below
- Medicare patients
- 46vs 24881% below
- Part D claims
- 104vs 6560% above
Medians across 2,448 emergency medicine physicians in Ohio with Dmand AI profiles that report each measure.
Dr. Parker'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Tammy A. Parker treated 46 Medicare patients in 2024, average age 74
CMS counts 46 Medicare patients who saw Dr. Parker in 2024. The largest group is 65 to 74, with 14 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 24% are also on Medicaid. Their average risk score is 2.01, 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. Parker's median patient age at 39, with 61% women.
Dr. Parker's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Parker's Medicare patients by sex, 2024
- Women2452%
- Men2248%
Chronic conditions among Dr. Parker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease57%
- Chronic kidney disease52%
- Diabetes50%
- Arthritis43%
- Anxiety39%
- COPD39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Parker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 39
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Tammy A. Parker wrote 34 Medicare Part D claims in 2024
In 2024, Dr. Parker wrote 34 Medicare Part D claims for 24 patients. 94% of them were for generic drugs. They cover 5 drugs, with $898 in total drug cost. In 2022, CMS named 100 claims across 6 drugs.
Dr. Parker's Part D claims by kind of drug, 2024
- Generic32 claims94%
- Brand-name and other2 claims6%
Dr. Parker's most prescribed drugs by claims, 2023
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. Parker's Part D claims, 2024
- Antibiotics32%11 of 34 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 1002023: 1044%
Drugs named by CMS: 5 in 2023, 6 in 2022.
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
How Dr. Tammy A. Parker takes part in Medicare
Dr. Parker accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Tammy A. Parker graduated from Medical College of Wisconsin
Dr. Parker graduated from Medical College of Wisconsin in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Tammy A. Parker'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Tammy A. Parker
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. Tammy A. Parker's NPI number?
Dr. Tammy A. Parker's NPI number is 1639259880. It was assigned on October 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Tammy A. Parker?
Dr. Tammy A. Parker is an emergency medicine physician in Gallipolis, Ohio. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Tammy A. Parker practice?
Dr. Parker practices at 100 Jackson Pike, Gallipolis, OH 45631. Dr. Parker's primary practice is Holzer Gallipolis in Gallipolis, Ohio, part of Holzer Health System. Dmand AI also links Dr. Parker to 5 medical groups.
What is Dr. Tammy A. Parker's office phone number?
The practice phone on file for Dr. Parker is (740) 446-5030.
What is Dr. Tammy A. Parker's medical license number?
Dr. Parker holds Ohio license 35076465.
Which hospitals is Dr. Tammy A. Parker affiliated with?
Dr. Parker practices at Holzer Gallipolis in Gallipolis, Ohio. Dr. Parker is also affiliated with Lima Memorial Health System.
What medical group is Dr. Tammy A. Parker part of?
Dr. Parker is linked to Holzer Health System. Dmand AI links Dr. Parker to 5 more medical groups.
Does Dr. Tammy A. Parker accept Medicare?
Yes. CMS data shows Dr. Parker billed Medicare for 39 services in 2024, and Dr. Parker accepts Medicare assignment.
How many Medicare patients does Dr. Tammy A. Parker see?
CMS counts 46 Medicare patients who saw Dr. Parker in 2024, with an average age of 74.
What services does Dr. Tammy A. Parker bill to Medicare?
In 2024, Dr. Parker's most billed Medicare services were emergency department visit (99285) and emergency department visit (99284).
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Where did Dr. Tammy A. Parker go to medical school?
Dr. Parker graduated from Medical College of Wisconsin in 1996.
What drugs does Dr. Tammy A. Parker prescribe most?
In 2023 Medicare Part D data, Dr. Parker's most prescribed drugs by claims were Cephalexin, Hydrocodone-Acetaminophen and Ondansetron ODT.
How long has Dr. Tammy A. Parker been practicing?
Dr. Parker graduated from medical school in 1996, 30 years ago.
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