Dr. Ruby Singh, MD
- Part D claims, 2024
- 909
- Hospital affiliations
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2019
- Practice address
- 93 Campus Ave, Lewiston, ME 04240
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
St Mary's Regional Medical Center - HOPD
Acute Care Hospital outpatient department · Lewiston, Maine
Find Dr. Singh's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Ruby Singh is a family medicine physician in Lewiston, Maine
Dr. Singh practices at St Mary's Regional Medical Center - HOPD in Lewiston, Maine.
Dr. Singh's NPI, 1467009944, was assigned on August 20, 2019. Dr. Singh holds Maine license EC221073.
- NPI
- 1467009944NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2163962937
- NPI enumeration date
- August 20, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ruby Singh practices at St Mary's Regional Medical Center - HOPD in Lewiston, Maine
Dr. Singh's primary practice is St Mary's Regional Medical Center - HOPD, at 93 Campus Ave, Lewiston, ME 04240.
- St Mary's Regional Medical Center - HOPD93 Campus Ave, Lewiston, ME 04240
Source: Dmand AI Affiliation Data
Dr. Ruby Singh is affiliated with 4 sites of care and 1 medical group
Dr. Singh's primary practice is St Mary's Regional Medical Center - HOPD in Lewiston, Maine. Dr. Singh is also affiliated with St. Mary's Regional Medical Center. The medical group on file is Apogee Physicians. Dmand AI also links Dr. Singh to 1 more group practice or clinic and 1 hospital outpatient department, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ruby Singh's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Singh practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St Mary's Regional Medical Center - HOPD | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ruby Singh is one of 991 family medicine physicians in Maine
Family medicine is Dr. Singh's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Singh is licensed in Maine.
Specialties and state licenses
- Family medicine, MainePrimary
Family medicine physicians near Dr. Singh
Counts of family 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. Ruby Singh's patients have a median age of 72
Across all payers, Dmand AI patient panel data puts Dr. Singh's median patient age at 72, with 55% women.
Dr. Singh's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women55%
- Men43%
Source: Dmand AI Patient Panel Data
Dr. Ruby Singh wrote 909 Medicare Part D claims in 2024
In 2024, Dr. Singh wrote 909 Medicare Part D claims for 128 patients. 81% of them were for generic drugs. CMS names the drug for 527 of them, across 25 drugs with 11 or more claims each, at $36,978 in total drug cost. In 2023, CMS named 621 claims across 32 drugs.
Dr. Singh's Part D claims by kind of drug, 2024
- Generic734 claims81%
- Brand-name and other175 claims19%
Dr. Singh'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. Singh's Part D claims, 2024
- Opioids3%25 of 909 claims
- Antibiotics2%19 of 909 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6212024: 52715%
Drugs named by CMS: 25 in 2024, 32 in 2023.
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. Ruby Singh takes part in Medicare
Dr. Singh 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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Sources for Dr. Ruby Singh'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 Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| 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. Ruby Singh
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ruby Singh's NPI number?
Dr. Ruby Singh's NPI number is 1467009944. It was assigned on August 20, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Ruby Singh?
Dr. Ruby Singh is a family medicine physician in Lewiston, Maine. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Ruby Singh practice?
Dr. Singh practices at 93 Campus Ave, Lewiston, ME 04240. Dr. Singh's primary practice is St Mary's Regional Medical Center - HOPD in Lewiston, Maine. Dmand AI also links Dr. Singh to 1 group practice or clinic and 1 hospital outpatient department.
What is Dr. Ruby Singh's medical license number?
Dr. Singh holds Maine license EC221073.
Which hospitals is Dr. Ruby Singh affiliated with?
Dr. Singh is affiliated with St. Mary's Regional Medical Center.
What medical group is Dr. Ruby Singh part of?
Dr. Singh is linked to Apogee Physicians.
Does Dr. Ruby Singh accept Medicare?
Yes. CMS lists Dr. Singh as accepting Medicare assignment.
What drugs does Dr. Ruby Singh prescribe most?
In 2024 Medicare Part D data, Dr. Singh's most prescribed drugs by claims were Atorvastatin Calcium, Albuterol Sulfate Hfa and Gabapentin.
How long has Dr. Ruby Singh been practicing?
Dr. Singh graduated from medical school in 2019, 7 years ago.
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