Crystal Nnenne Azu, MD
Cardiovascular Disease Physician · Saint Louis, MO
Crystal Nnenne Azu, MD is a cardiovascular disease physician with a practice address in Saint Louis, Missouri, and NPI 1114457769, issued on Jun 15, 2017. Check the license (Missouri 2024030894, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Crystal Nnenne Azu
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- 2024030894 MO
Self-reported in NPPES; status is on the state search - Practice location
- 4921 Parkview PL, Saint Louis, MO 63110
- Phone
- (314) 362-1291
- Enumerated
- Jun 15, 2017
- Record last updated
- Apr 15, 2025
- Fax
- (314) 362-4278
- Medicaid ID
- 200146372 MO
- Medicare enrollment
- Enrolled (PECOS I20240917004643); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 446 in Missouri → Look up another NPI →
Also registered at 4921 Parkview PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Syed Adil, MDAdult Reconstructive Orthopaedic Surgery Physician1467942953
- Homaa Ahmad, MDCardiovascular Disease Physician1477635092
Verify Crystal Nnenne Azu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2024030894Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
405 Medicare Part D claims for 99 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Metoprolol Succinate63 claims
- Atorvastatin Calcium46 claims
- Furosemide29 claims
- Spironolactone26 claims
- Ezetimibe23 claims
- Entresto21 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: $291.03
2 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 16,686 providers of this specialty with any payment received $3,819.56 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
- Washington UniversitySaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Crystal Nnenne Azu among 446 cardiovascular disease physician records in Missouri
Crystal Nnenne Azu, MD is one of 446 cardiovascular disease physician records with a practice address in Missouri. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 90% of them.
- NPI issued2017 · 90% of these records are older, 8% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2017 · median 1998 among the 293 with a school on file
- Record last updated2025 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Missouri
There are 446 cardiovascular disease physician records in Missouri.
All 446 in Missouri → Every provider in Saint Louis → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- William Bowen, MDSaint Louis, MO 631101609815950
- Alan Braverman, MDSaint Louis, MO 631101477597805
- Sharon Cresci, MDSaint Louis, MO 631101083630214
- Victor Davila, MDSaint Louis, MO 631101235173675
- Gerald Dorn, MDSaint Louis, MO 631101386600302
- John Gorcsan, MDSaint Louis, MO 631101942273578
- Robert Gropler, MDSaint Louis, MO 631101194752220
- Andrew Kates, MDSaint Louis, MO 631101376585638
Common questions
What is Crystal Nnenne Azu, MD's NPI number?
Crystal Nnenne Azu, MD's National Provider Identifier (NPI) is 1114457769, issued on Jun 15, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Crystal Nnenne Azu, MD located?
The NPPES record lists a practice address at 4921 Parkview PL, Saint Louis, MO, 63110. Phone: (314) 362-1291. Providers update this record themselves, so call before visiting.
How can I verify Crystal Nnenne Azu, MD's license?
NPPES lists Missouri license number 2024030894, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Crystal Nnenne Azu, MD prescribe under Medicare Part D?
In 2024, Crystal Nnenne Azu, MD had 405 Medicare Part D claims for 99 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.