Dr. Spencer Masiewicz, DO
- Medicare services, 2024
- 670
- Medicare patients, 2024
- 471
- Part D claims, 2024
- 260
- Hospital affiliations
- 2
- Medical group
- 1
- Practice address
- 743 Spring Street, Gainesville, GA 30501
- Practice phone
- Call (770) 535-3553
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Masiewicz's professional email, personal email and mobile number
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Dr. Spencer Masiewicz is an emergency medicine physician in Gainesville, Georgia
Dr. Masiewicz practices at Northeast Georgia Medical Center Gainesville in Gainesville, Georgia, part of Northeast Georgia Health System.
Dr. Masiewicz's NPI, 1982145199, was assigned on March 20, 2017. Dr. Masiewicz holds South Carolina license LL41037.
- NPI
- 1982145199NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8921371196
- NPI enumeration date
- March 20, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (770) 535-3553
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Spencer Masiewicz practices at Northeast Georgia Medical Center Gainesville in Gainesville, Georgia
Dr. Masiewicz's primary practice is Northeast Georgia Medical Center Gainesville, at 743 Spring Street, Gainesville, GA 30501 in Hall County. The practice phone is (770) 535-3553.
- Northeast Georgia Medical Center Gainesville743 Spring Street, Gainesville, GA 30501 · Hall CountyPhone(770) 535-3553
Source: Dmand AI Affiliation Data
Dr. Spencer Masiewicz is affiliated with 2 sites of care and 1 medical group
Dr. Masiewicz's primary practice is Northeast Georgia Medical Center Gainesville in Gainesville, Georgia, part of Northeast Georgia Health System. Dr. Masiewicz is also affiliated with Northeast Georgia Medical Center Lumpkin. The medical group on file is Georgia Emergency Department Services.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Spencer Masiewicz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Masiewicz practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northeast Georgia Medical Center Gainesville | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Spencer Masiewicz is one of 1,629 emergency medicine physicians in Georgia
Emergency medicine is Dr. Masiewicz's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Masiewicz is licensed in South Carolina.
Specialties and state licenses
- Emergency medicine, South CarolinaPrimary
Emergency medicine physicians near Dr. Masiewicz
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. Spencer Masiewicz billed Medicare for 670 services in 2024
CMS data shows 670 Medicare services from Dr. Masiewicz across 4 procedure codes in 2024, for 471 Medicare patients. Medicare paid $64,565 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Masiewicz's Medicare services by type, 2024
- Office and hospital visits475
- Tests and treatments195
Dr. Masiewicz compared with the Georgia median for emergency medicine physicians, 2024
- Dr. Masiewicz
- Georgia median
- Medicare services
- 670vs 2912.3 times
- Medicare patients
- 471vs 26180% above
- Part D claims
- 169vs 9382% above
Medians across 1,545 emergency medicine physicians in Georgia with Dmand AI profiles that report each measure.
Dr. Masiewicz'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. Spencer Masiewicz treated 471 Medicare patients in 2024, average age 76
CMS counts 471 Medicare patients who saw Dr. Masiewicz in 2024. The largest group is 75 to 84, with 189 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 19% are also on Medicaid. Their average risk score is 2.32, 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. Masiewicz's median patient age at 58, with 59% women.
Dr. Masiewicz's Medicare patients by age, 2024
Dr. Masiewicz's Medicare patients by sex, 2024
- Women24752%
- Men22448%
Chronic conditions among Dr. Masiewicz's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Chronic kidney disease49%
- Ischemic heart disease48%
- Anxiety44%
- Heart failure42%
- Diabetes41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Masiewicz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women59%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Spencer Masiewicz wrote 260 Medicare Part D claims in 2024
In 2024, Dr. Masiewicz wrote 260 Medicare Part D claims for 153 patients. 97% of them were for generic drugs. CMS names the drug for 169 of them, across 9 drugs with 11 or more claims each, at $749 in total drug cost.
Dr. Masiewicz's Part D claims by kind of drug, 2024
- Generic253 claims97%
- Brand-name and other7 claims3%
Dr. Masiewicz'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. Masiewicz's Part D claims, 2024
- Opioids18%48 of 260 claims
- Antibiotics26%68 of 260 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
How Dr. Spencer Masiewicz takes part in Medicare
Dr. Masiewicz 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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Sources for Dr. Spencer Masiewicz'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) |
| 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. Spencer Masiewicz
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. Spencer Masiewicz's NPI number?
Dr. Spencer Masiewicz's NPI number is 1982145199. It was assigned on March 20, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Spencer Masiewicz?
Dr. Spencer Masiewicz is an emergency medicine physician in Gainesville, Georgia. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Spencer Masiewicz practice?
Dr. Masiewicz practices at 743 Spring Street, Gainesville, GA 30501. Dr. Masiewicz's primary practice is Northeast Georgia Medical Center Gainesville in Gainesville, Georgia, part of Northeast Georgia Health System.
What is Dr. Spencer Masiewicz's office phone number?
The practice phone on file for Dr. Masiewicz is (770) 535-3553.
What is Dr. Spencer Masiewicz's medical license number?
Dr. Masiewicz holds South Carolina license LL41037, one of 2 state licenses on file.
Which hospitals is Dr. Spencer Masiewicz affiliated with?
Dr. Masiewicz practices at Northeast Georgia Medical Center Gainesville in Gainesville, Georgia. Dr. Masiewicz is also affiliated with Northeast Georgia Medical Center Lumpkin.
What medical group is Dr. Spencer Masiewicz part of?
Dr. Masiewicz is linked to Georgia Emergency Department Services.
Does Dr. Spencer Masiewicz accept Medicare?
Yes. CMS data shows Dr. Masiewicz billed Medicare for 670 services in 2024, and Dr. Masiewicz accepts Medicare assignment.
How many Medicare patients does Dr. Spencer Masiewicz see?
CMS counts 471 Medicare patients who saw Dr. Masiewicz in 2024, with an average age of 76.
What services does Dr. Spencer Masiewicz bill to Medicare?
In 2024, Dr. Masiewicz's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and critical care (99291).
What drugs does Dr. Spencer Masiewicz prescribe most?
In 2024 Medicare Part D data, Dr. Masiewicz's most prescribed drugs by claims were Ondansetron ODT, Prednisone and Oxycodone-Acetaminophen.
How long has Dr. Spencer Masiewicz been practicing?
Dr. Masiewicz graduated from medical school in 2017, 9 years ago.
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