Mamadou Sadio Diallo, FNP
Family Nurse Practitioner · Havre De Grace, MD
Mamadou Sadio Diallo, FNP is a family nurse practitioner with a practice address in Havre De Grace, Maryland, and NPI 1164005104, issued on Apr 28, 2021. Check the license (Maryland R221648, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mamadou Sadio Diallo
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- R221648 MD
Self-reported in NPPES; status is on the state search - Practice location
- 504 Lewis St, Havre De Grace, MD 21078
- Phone
- (443) 502-5311
- Enumerated
- Apr 28, 2021
- Record last updated
- Apr 28, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20240409001001); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,124 in Maryland → Look up another NPI →
Also registered at 504 Lewis St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Shaunyetta Knight, CRNPFamily Nurse Practitioner1871152371
- Candrea Smith, FNP-CFamily Medicine Physician1689192767
Verify Mamadou Sadio Diallo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license R221648Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average family nurse practitioner in 2024
125 Medicare Part D claims for 36 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 39 claims were for opioids.
Most prescribed
- Oxycodone Hcl17 claims
- Tramadol Hcl15 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.
Bills Medicare through 2 group practices
- MD Family Care LLCHavre De Grace, MD
- Optimize Medical GroupPikesville, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mamadou Sadio Diallo among 4,124 family nurse practitioner records in Maryland
Mamadou Sadio Diallo, FNP is one of 4,124 family nurse practitioner records with a practice address in Maryland. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 65% of them.
- NPI issued2021 · 65% of these records are older, 28% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2020 · median 2019 among the 2,370 with a school on file
- Record last updated2021 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 family nurse practitioner records list a practice address in Havre De Grace
They are 11 of the 360 NPPES records with a practice address in Havre De Grace, and 4,124 family nurse practitioner records in Maryland.
All 4,124 in Maryland → Every provider in Havre De Grace → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Vida Amevinya, CRNPHavre De Grace, MD 210781124711700
- Victoria Blucher, CRNPHavre De Grace, MD 210781831354828
- Lynda Boegner, CRNP-F, PMHHavre De Grace, MD 210781023699402
- Christina Darling, CRNPHavre De Grace, MD 210781083181432
- Kayla Guanzon, CRNPHavre De Grace, MD 210781336883636
- Christina Husemann, FNPHavre De Grace, MD 210781649832700
- Shaunyetta Knight, CRNPHavre De Grace, MD 210781871152371
- Sara Schwartz, DNP, APRN, FNP-CHavre De Grace, MD 210781346962131
Common questions
What is Mamadou Sadio Diallo, FNP's NPI number?
Mamadou Sadio Diallo, FNP's National Provider Identifier (NPI) is 1164005104, issued on Apr 28, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Mamadou Sadio Diallo, FNP located?
The NPPES record lists a practice address at 504 Lewis St, Havre De Grace, MD, 21078. Phone: (443) 502-5311. Providers update this record themselves, so call before visiting.
How can I verify Mamadou Sadio Diallo, FNP's license?
NPPES lists Maryland license number R221648, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Mamadou Sadio Diallo, FNP prescribe under Medicare Part D?
In 2024, Mamadou Sadio Diallo, FNP had 125 Medicare Part D claims for 36 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.