Dr. Grace Wanjiku, MD
- Medicare services, 2024
- 332
- Medicare patients, 2024
- 297
- Part D claims, 2024
- 52
- Hospital affiliations
- 3
- Medical groups
- 3
- Practice address
- 164 Summit Avenue, Providence, RI 02906
- Practice phone
- Call (401) 793-2500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Grace Wanjiku is an emergency medicine physician in Providence, Rhode Island
Dr. Wanjiku practices at The Miriam Hospital in Providence, Rhode Island, part of Brown University Health.
Dr. Wanjiku's NPI, 1992099980, was assigned on June 7, 2011. Dr. Wanjiku graduated from Yale University School of Medicine in 2011. Dr. Wanjiku holds Rhode Island license MD15701.
- NPI
- 1992099980NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0547489379
- NPI enumeration date
- June 7, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (401) 793-2500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Grace Wanjiku practices at The Miriam Hospital in Providence, Rhode Island
Dr. Wanjiku's primary practice is The Miriam Hospital, at 164 Summit Avenue, Providence, RI 02906 in Providence County. The practice phone is (401) 793-2500.
- The Miriam Hospital164 Summit Avenue, Providence, RI 02906 · Providence CountyPhone(401) 793-2500
Source: Dmand AI Affiliation Data
Dr. Grace Wanjiku is affiliated with 3 sites of care and 3 medical groups
Dr. Wanjiku's primary practice is The Miriam Hospital in Providence, Rhode Island, part of Brown University Health. Dr. Wanjiku is also affiliated with Rhode Island Hospital. The medical group on file is Brown Emergency Medicine. Dmand AI also links Dr. Wanjiku to 1 more hospital and 2 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Grace Wanjiku's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Wanjiku practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The Miriam Hospital | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Grace Wanjiku is one of 262 emergency medicine physicians in Rhode Island
Emergency medicine is Dr. Wanjiku's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Wanjiku is licensed in Rhode Island.
Specialties and state licenses
- Emergency medicine, Rhode IslandPrimary
Emergency medicine physicians near Dr. Wanjiku
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. Grace Wanjiku billed Medicare for 332 services in 2024
CMS data shows 332 Medicare services from Dr. Wanjiku across 6 procedure codes in 2024, for 297 Medicare patients. Medicare paid $39,474 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Wanjiku's Medicare services by type, 2024
- Office and hospital visits287
- Tests and treatments27
- Imaging18
Dr. Wanjiku compared with the Rhode Island median for emergency medicine physicians, 2024
- Dr. Wanjiku
- Rhode Island median
- Medicare services
- 332vs 20264% above
- Medicare patients
- 297vs 23228% above
- Part D claims
- 11vs 2454% below
Medians across 242 emergency medicine physicians in Rhode Island with Dmand AI profiles that report each measure.
Dr. Wanjiku'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Wanjiku and other emergency medicine physicians in Rhode Island.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Grace Wanjiku treated 297 Medicare patients in 2024, average age 76
CMS counts 297 Medicare patients who saw Dr. Wanjiku in 2024. The largest group is 75 to 84, with 107 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 21% are also on Medicaid. Their average risk score is 2.12, 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. Wanjiku's median patient age at 59, with 57% women.
Dr. Wanjiku's Medicare patients by age, 2024
Dr. Wanjiku's Medicare patients by sex, 2024
- Women16656%
- Men13144%
Chronic conditions among Dr. Wanjiku's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Anxiety52%
- Mood disorders48%
- Depression45%
- Diabetes43%
- Chronic kidney disease41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Wanjiku's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Grace Wanjiku wrote 52 Medicare Part D claims in 2024
In 2024, Dr. Wanjiku wrote 52 Medicare Part D claims for 42 patients. 90% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $67 in total drug cost.
Dr. Wanjiku's Part D claims by kind of drug, 2024
- Generic47 claims90%
- Brand-name and other5 claims10%
Dr. Wanjiku'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. Wanjiku's Part D claims, 2024
- Antibiotics21%11 of 52 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. Grace Wanjiku takes part in Medicare
Dr. Wanjiku 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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Dr. Grace Wanjiku graduated from Yale University School of Medicine
Dr. Wanjiku graduated from Yale University School of Medicine in 2011.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Grace Wanjiku'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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Grace Wanjiku
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What is Dr. Grace Wanjiku's NPI number?
Dr. Grace Wanjiku's NPI number is 1992099980. It was assigned on June 7, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Grace Wanjiku?
Dr. Grace Wanjiku is an emergency medicine physician in Providence, Rhode Island. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Grace Wanjiku practice?
Dr. Wanjiku practices at 164 Summit Avenue, Providence, RI 02906. Dr. Wanjiku's primary practice is The Miriam Hospital in Providence, Rhode Island, part of Brown University Health. Dmand AI also links Dr. Wanjiku to 1 hospital and 2 medical groups.
What is Dr. Grace Wanjiku's office phone number?
The practice phone on file for Dr. Wanjiku is (401) 793-2500.
What is Dr. Grace Wanjiku's medical license number?
Dr. Wanjiku holds Rhode Island license MD15701.
Which hospitals is Dr. Grace Wanjiku affiliated with?
Dr. Wanjiku practices at The Miriam Hospital in Providence, Rhode Island. Dr. Wanjiku is also affiliated with Rhode Island Hospital. Dmand AI links Dr. Wanjiku to 1 more hospital.
What medical group is Dr. Grace Wanjiku part of?
Dr. Wanjiku is linked to Brown Emergency Medicine. Dmand AI links Dr. Wanjiku to 2 more medical groups.
Does Dr. Grace Wanjiku accept Medicare?
Yes. CMS data shows Dr. Wanjiku billed Medicare for 332 services in 2024, and Dr. Wanjiku accepts Medicare assignment.
How many Medicare patients does Dr. Grace Wanjiku see?
CMS counts 297 Medicare patients who saw Dr. Wanjiku in 2024, with an average age of 76.
What services does Dr. Grace Wanjiku bill to Medicare?
In 2024, Dr. Wanjiku's most billed Medicare services were emergency department visit (99285), critical care (99291) and emergency department visit (99284).
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Where did Dr. Grace Wanjiku go to medical school?
Dr. Wanjiku graduated from Yale University School of Medicine in 2011.
What drugs does Dr. Grace Wanjiku prescribe most?
In 2024 Medicare Part D data, Dr. Wanjiku's most prescribed drugs by claims were Ibuprofen.
How long has Dr. Grace Wanjiku been practicing?
Dr. Wanjiku graduated from medical school in 2011, 15 years ago.
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