Mercedes Porosnicu, MD
Internal Medicine Physician · Winston Salem, NC
Mercedes Porosnicu, MD is an internal medicine physician with a practice address in Winston Salem, North Carolina, and NPI 1417903584, issued on May 26, 2006. Check the license on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mercedes Porosnicu
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- Practice location
- Medical Center Blvd, Winston Salem, NC 27157
- Phone
- (336) 716-2255
- Enumerated
- May 26, 2006
- Record last updated
- Jan 9, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicaid IDs
- 3810005521 WV
5905402 NC
10280001 VA - Medicare enrollment
- Enrolled (PECOS I20070124000741); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,056 in North Carolina → Look up another NPI →
Also registered at Medical Center Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Rachel AbrahamStudent in an Organized Health Care Education/Training Program1790451987
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Verify Mercedes Porosnicu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
235 Medicare Part D claims for 61 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 60 claims were for opioids.
Most prescribed
- Oxycodone Hcl48 claims
- Levothyroxine Sodium40 claims
- Ondansetron Odt27 claims
- Gabapentin16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $2,327.56
3 payments; by number, the most common kind was consulting fee; the largest payer was Boehringer Ingelheim International GmbH. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Wake Forest University Health SciencesClemmons, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mercedes Porosnicu among 4,056 internal medicine physician records in North Carolina
Mercedes Porosnicu, MD is one of 4,056 internal medicine physician records with a practice address in North Carolina. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 52% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1987 · median 2004 among the 2,706 with a school on file
- Record last updated2008 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
218 internal medicine physician records list a practice address in Winston Salem
They are 218 of the 10,040 NPPES records with a practice address in Winston Salem, and 4,056 internal medicine physician records in North Carolina.
All 4,056 in North Carolina → Every provider in Winston Salem → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Megan Alexander, MDWinston Salem, NC 271571467438739
- William Applegate, MDWinston Salem, NC 271571730163197
- Alain Bertoni, MDWinston Salem, NC 271571558344259
- Thomas Dubose, MDWinston Salem, NC 271571164405874
- Kirsten Feiereisel, MDWinston Salem, NC 271571669468724
- Elizabeth Gamble, MDWinston Salem, NC 271571356326391
- David Goff, MDWinston Salem, NC 271571144203845
- Peter Hoffmann, MDWinston Salem, NC 271571063495760
Common questions
What is Mercedes Porosnicu, MD's NPI number?
Mercedes Porosnicu, MD's National Provider Identifier (NPI) is 1417903584, issued on May 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mercedes Porosnicu, MD located?
The NPPES record lists a practice address at Medical Center Blvd, Winston Salem, NC, 27157. Phone: (336) 716-2255. Providers update this record themselves, so call before visiting.
How can I verify Mercedes Porosnicu, MD's license?
Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mercedes Porosnicu, MD prescribe under Medicare Part D?
In 2024, Mercedes Porosnicu, MD had 235 Medicare Part D claims for 61 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.