Doctor profile · Federal record
Dr. Rachel Mao, FNP
Nurse Practitioner · Greenfield, MA
- NPI 1427556265
- Accepts Medicare
- 9 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
48 Sanderson St Ste 2
Greenfield, MA 013012779
(413) 773-2655
fax (413) 773-2629 - Mailing address
-
280 Chestnut St Fl 2
Springfield, MA 011991000
Credentials & registration
- NPI registered
- January 2018 — 8 yrs on file
- Year of graduation
- 2017 — 9 yrs since
- Specialty taxonomy
- 363L00000X — NUCC code
- State license (1)
- Massachusetts #RN2260275
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1427556265. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
427
Distinct HCPCS
9
Medicare allowed
$27,328
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 109 | 103 | $57 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 83 | 83 | $84 | |
99441 |
Telephone medical discussion with physician, 5-10 minutes | 76 | 70 | $30 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 45 | 44 | $57 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 40 | 40 | $71 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 33 | 33 | $114 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 18 | 18 | $84 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 12 | 12 | $30 | |
99443 |
Telephone medical discussion with physician, 21-30 minutes | 11 | 11 | $83 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 70. This provider delivers 6.1× the peer median.Open Payments
Industry payments received
All-time total
$135
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| E.R. Squibb & Sons, L.L.C. | 1 | $135.00 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
862
Patients
423
Total drug cost
$82,956
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 161 | 49 | $3,111 |
| Pantoprazole Sodium | Generic | 142 | 49 | $3,060 |
| Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) | Brand | 133 | 129 | $3,097 |
| Famotidine | Generic | 88 | 37 | $1,328 |
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 81 | 81 | $1,414 |
| Linzess (Linaclotide) | Brand | 81 | 14 | $52,040 |
| Dicyclomine Hcl | Generic | 62 | 23 | $1,795 |
| Plenvu (Peg3350/Sod Sul/Nacl/Kcl/Asb/C) | Brand | 22 | 22 | $3,250 |
| Sucralfate | Generic | 22 | 19 | $2,065 |
| Trulance (Plecanatide) | Brand | 16 | 0 | $8,437 |
Frequently asked questions
What is Dr. Rachel Mao's medical specialty?
Dr. Rachel Mao practices Nurse Practitioner in Greenfield, MA.
Where does Dr. Rachel Mao practice?
Dr. Rachel Mao practices at 48 Sanderson St Ste 2, Greenfield, MA 013012779. Office phone: 4137732655.
What is Dr. Rachel Mao's NPI?
Dr. Rachel Mao's National Provider Identifier (NPI) is 1427556265, issued by NPPES.
Does Dr. Rachel Mao accept Medicare assignment?
Yes. Dr. Rachel Mao accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Rachel Mao commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Telephone medical discussion with physician (HCPCS 99441). Source: CMS Medicare Physician & Other Practitioners file.