Rachel Mao, FNP
Nurse Practitioner · Greenfield, MA
Rachel Mao, FNP is a nurse practitioner with a practice address in Greenfield, Massachusetts, and NPI 1427556265, issued on Jan 26, 2018. Check the license (Massachusetts RN2260275, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Rachel Mao
- Credential
- FNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- RN2260275 MA
Self-reported in NPPES; status is on the state search - Practice location
- 48 Sanderson St Ste 2, Greenfield, MA 01301
- Phone
- (413) 773-2655
- Enumerated
- Jan 26, 2018
- Entity
- Type 1 · individual
Verify Rachel Mao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN2260275Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
20% more Medicare Part D claims than the average nurse practitioner in 2024
1,368 Medicare Part D claims for 579 beneficiaries, against an average of 1,144 among the 50,277 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Omeprazole233 claims
- Pantoprazole Sodium193 claims
- Gavilyte-G176 claims
- Famotidine129 claims
- Linzess119 claims
- Dicyclomine Hcl85 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: $135.00
1 payment, mostly food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C.. The 36,168 providers of this specialty with any payment received $802.80 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.
One hospital or facility affiliation
- Baystate Medical Practices IncGreenfield, MA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Nurse Practitioner providers in Massachusetts
There are 3,234 nurse practitioner records in Massachusetts.
Other nurse practitioner records in Massachusetts
- Carolyn Abbanat Villafane, NPBoston, MA1598810269
- Lisa Abbondanza, CNPFranklin, MA1770892630
- Fatima AbdallaMelrose, MA1326407529
- Erika AbeidFairhaven, MA1831084839
- Esayas Abraham, NPChelsea, MA1851275895
- Alissa AbrahamsonFramingham, MA1285434753
- Lauren Abric, CNPMilford, MA1235591447
- Amaka Achibiri, FNPWestwood, MA1932061736
- Jennifer Ackil, NPBoston, MA1730406398
- John AcordFairhaven, MA1013531086
Common questions
What is Rachel Mao, FNP's NPI number?
Rachel Mao, FNP's National Provider Identifier (NPI) is 1427556265, issued on Jan 26, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Rachel Mao, FNP located?
The NPPES record lists a practice address at 48 Sanderson St Ste 2, Greenfield, MA, 01301. Phone: (413) 773-2655. Providers update this record themselves, so call before visiting.
How can I verify Rachel Mao, FNP's license?
NPPES lists Massachusetts license number RN2260275, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Rachel Mao, FNP prescribe under Medicare Part D?
In 2024, Rachel Mao, FNP had 1,368 Medicare Part D claims for 579 beneficiaries; the average among nurse practitioner prescribers was 1,144. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.