Chikako Okumura Riester
Adult Health Nurse Practitioner · Summerville, SC
Chikako Okumura Riester is an adult health nurse practitioner with a practice address in Summerville, South Carolina, and NPI 1386997542, issued on Oct 24, 2012. Check the license (South Carolina 24189, as entered in NPPES) with the South Carolina board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Chikako Okumura Riester
- Primary taxonomy
- Adult Health Nurse Practitioner 363LA2200X
- License numbers
- 24189 SC
R200655 MD
Self-reported in NPPES; status is on the state search - Practice location
- 2001 2ND Ave Ste 201, Summerville, SC 29486
- Phone
- (843) 572-4840
- Enumerated
- Oct 24, 2012
- Record last updated
- Nov 12, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (843) 764-2726
- Medicare enrollment
- Enrolled (PECOS I20200827001050); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest adult health nurse practitioner records → All 402 in South Carolina → Look up another NPI →
Also registered at 2001 2ND Ave Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Colin Edgerton, MDRheumatology Physician1245307578
- William Edwards, M.D.Rheumatology Physician1952409997
Verify Chikako Okumura Riester in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich South Carolina board licenses this profession
Search for license 24189Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% more Medicare Part D claims than the average adult health nurse practitioner in 2024
1,406 Medicare Part D claims for 267 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 11 claims were for opioids.
Most prescribed
- Methotrexate378 claims
- Prednisone191 claims
- Hydroxychloroquine Sulfate179 claims
- Gabapentin120 claims
- Allopurinol78 claims
- Humira(Cf) Pen52 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.
The MIPS final score for 2023 (Medicare payment program): 96.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,844.08
90 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 12,291 providers of this specialty with any payment received $946.40 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
- Articularis Healthcare Group IncSummerville, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chikako Okumura Riester among 402 adult health nurse practitioner records in South Carolina
Chikako Okumura Riester is one of 402 adult health nurse practitioner records with a practice address in South Carolina. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 44% of them.
- NPI issued2012 · 44% of these records are older, 52% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2011 · median 2015 among the 224 with a school on file
- Record last updated2020 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Adult Health Nurse Practitioner providers in South Carolina
There are 402 adult health nurse practitioner records in South Carolina.
All 402 in South Carolina → Every provider in Summerville → Adult Health Nurse Practitioner nationwide →
The 8 adult health nurse practitioner records with the nearest ZIP codes
- Kristeen Hillier, ANPSummerville, SC 294851184730731
- Michelle Peterson, APRNSummerville, SC 294851144601592
- Marie Rataj, ANPSummerville, SC 294851003872391
- Melody Saulnier, NPSummerville, SC 294851356357891
- April DaleyWalterboro, SC 294881881143998
- Shannon Salyers, APRNWalterboro, SC 294881508223660
- Kathleen Waters, APRNSummerville, SC 294831295028959
- Morgan BallDaniel Island, SC 294921598511917
Common questions
What is Chikako Okumura Riester's NPI number?
Chikako Okumura Riester's National Provider Identifier (NPI) is 1386997542, issued on Oct 24, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Chikako Okumura Riester located?
The NPPES record lists a practice address at 2001 2ND Ave Ste 201, Summerville, SC, 29486. Phone: (843) 572-4840. Providers update this record themselves, so call before visiting.
How can I verify Chikako Okumura Riester's license?
NPPES lists South Carolina license number 24189, as entered by the provider. Search the South Carolina board that licenses this profession; the NPPES record confirms identity only.
How much does Chikako Okumura Riester prescribe under Medicare Part D?
In 2024, Chikako Okumura Riester had 1,406 Medicare Part D claims for 267 beneficiaries; the average among adult health nurse practitioner prescribers was 1,280. Part D covers Medicare prescriptions only.
What is Chikako Okumura Riester's MIPS final score?
The 2023 MIPS final score is 96.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.