Dr. Alexander John Mercer, MD
- Medicare services, 2024
- 289
- Medicare patients, 2024
- 77
- Part D claims, 2024
- 1,807
- Industry payments
- $372
- State license
- 1
- Practice address
- 418 Creekstone Rdg, Woodstock, GA 30188
- Practice phone
- Call (678) 494-8988
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Alexander J. Mercer, M.D.
Woodstock, Georgia
Find Dr. Mercer'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. Alexander John Mercer is a psychiatrist in Woodstock, Georgia
Dr. Mercer practices at Alexander J. Mercer, M.D. in Woodstock, Georgia.
Dr. Mercer's NPI, 1821153511, was assigned on December 24, 2006. Dr. Mercer graduated from Vanderbilt University School of Medicine in 1975. Dr. Mercer holds Georgia license 026006.
- NPI
- 1821153511NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9638362148
- NPI enumeration date
- December 24, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (678) 494-8988
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 77
- Medical school graduation
- 1975
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alexander John Mercer practices at Alexander J. Mercer, M.D. in Woodstock, Georgia
Dr. Mercer's primary practice is Alexander J. Mercer, M.D., at 418 Creekstone Rdg, Woodstock, GA 30188 in Cherokee County. The practice phone is (678) 494-8988.
- Alexander J. Mercer, M.D.418 Creekstone Rdg, Woodstock, GA 30188 · Cherokee CountyPhone(678) 494-8988
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Alexander John Mercer is affiliated with 1 site of care
Dr. Mercer's primary practice is Alexander J. Mercer, M.D. in Woodstock, Georgia.
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Alexander John Mercer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mercer practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Alexander J. Mercer, M.D. | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alexander John Mercer is one of 929 psychiatrists in Georgia
Psychiatry is Dr. Mercer's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Mercer is licensed in Georgia.
Specialties and state licenses
- Psychiatry, GeorgiaPrimary
Psychiatrists near Dr. Mercer
Counts of psychiatrists 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. Alexander John Mercer billed Medicare for 289 services in 2024
CMS data shows 289 Medicare services from Dr. Mercer across 4 procedure codes in 2024, for 77 Medicare patients. Medicare paid $21,551 for them. Every service was in an office.
Dr. Mercer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3332024: 26820%
- Lab and pathology
- 2023: 242024: 2113%
Dr. Mercer compared with the Georgia median for psychiatrists, 2024
- Dr. Mercer
- Georgia median
- Medicare services
- 289vs 1442.0 times
- Medicare patients
- 77vs 4667% above
- Part D claims
- 1,712vs 2177.9 times
Medians across 917 psychiatrists in Georgia with Dmand AI profiles that report each measure.
Dr. Mercer'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. Mercer and other psychiatrists in Georgia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alexander John Mercer treated 77 Medicare patients in 2024, average age 72
CMS counts 77 Medicare patients who saw Dr. Mercer in 2024. The largest group is 65 to 74, with 39 patients. 75% of them have anxiety, and 75% have mood disorders. Their average risk score is 1.30, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Mercer's median patient age at 63, with 46% women.
Dr. Mercer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Mercer's Medicare patients by sex, 2024
- Women4862%
- Men2938%
Chronic conditions among Dr. Mercer's Medicare patients, 2024
- Anxiety75%
- Mood disorders75%
- High cholesterol74%
- High blood pressure70%
- Depression66%
- Arthritis61%
- Bipolar disorder26%
- Ischemic heart disease26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mercer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women46%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Alexander John Mercer wrote 1,807 Medicare Part D claims in 2024
In 2024, Dr. Mercer wrote 1,807 Medicare Part D claims for 100 patients. 99% of them were for generic drugs. CMS names the drug for 1,712 of them, across 34 drugs with 11 or more claims each, at $20,333 in total drug cost. In 2023, CMS named 1,825 claims across 33 drugs.
Dr. Mercer's Part D claims by kind of drug, 2024
- Generic1,784 claims99%
- Brand-name23 claims1%
Dr. Mercer'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. Mercer's Part D claims, 2024
- Antipsychotics, patients 65 and over13%230 of 1,807 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,8252024: 1,7126%
Drugs named by CMS: 34 in 2024, 33 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
How Dr. Alexander John Mercer takes part in Medicare
Dr. Mercer 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. Alexander John Mercer received $372 in industry payments from 2016 to 2017
CMS Open Payments shows 4 general payments to Dr. Mercer from 3 drug and device companies from 2016 to 2017. Speaker and faculty fees make up the largest share, 35% of the total. Indivior Inc. paid the most, $129.
General payments to Dr. Mercer by program year, 2016 to 2017
General payments to Dr. Mercer by kind, 2016 to 2017
- Speaker and faculty fees$12935%
- Education$12634%
- Food and beverage$11732%
Companies that paid Dr. Mercer the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Alexander John Mercer graduated from Vanderbilt University School of Medicine
Dr. Mercer graduated from Vanderbilt University School of Medicine in 1975.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Alexander John Mercer'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 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) |
| Industry payments | Open Payments (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. Alexander John Mercer
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. Alexander John Mercer's NPI number?
Dr. Alexander John Mercer's NPI number is 1821153511. It was assigned on December 24, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Alexander John Mercer?
Dr. Alexander John Mercer is a psychiatrist in Woodstock, Georgia. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Alexander John Mercer practice?
Dr. Mercer practices at 418 Creekstone Rdg, Woodstock, GA 30188. Dr. Mercer's primary practice is Alexander J. Mercer, M.D. in Woodstock, Georgia.
What is Dr. Alexander John Mercer's office phone number?
The practice phone on file for Dr. Mercer is (678) 494-8988.
What is Dr. Alexander John Mercer's medical license number?
Dr. Mercer holds Georgia license 026006.
Does Dr. Alexander John Mercer accept Medicare?
Yes. CMS data shows Dr. Mercer billed Medicare for 289 services in 2024, and Dr. Mercer accepts Medicare assignment.
How many Medicare patients does Dr. Alexander John Mercer see?
CMS counts 77 Medicare patients who saw Dr. Mercer in 2024, with an average age of 72.
What services does Dr. Alexander John Mercer bill to Medicare?
In 2024, Dr. Mercer's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and office visit, established patient (99215).
Where did Dr. Alexander John Mercer go to medical school?
Dr. Mercer graduated from Vanderbilt University School of Medicine in 1975.
What drugs does Dr. Alexander John Mercer prescribe most?
In 2024 Medicare Part D data, Dr. Mercer's most prescribed drugs by claims were Alprazolam, Quetiapine Fumarate and Mirtazapine.
Has Dr. Alexander John Mercer received payments from drug or device companies?
CMS Open Payments shows $372 in general payments to Dr. Mercer from 3 companies from 2016 to 2017. The largest total came from Indivior Inc.
How long has Dr. Alexander John Mercer been practicing?
Dr. Mercer graduated from medical school in 1975, 51 years ago.
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