Doctor profile · Federal record
Dr. Maria Koen, NP
Family Nurse Practitioner (CMS: Nurse Practitioner) · Boston, MA
- NPI 1891833935
- Accepts Medicare
- 20 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1 Joslin Pl
Boston, MA 022155306
(617) 732-2699 - Mailing address
-
33 Auburn St # B
Waltham, MA 024532803
Credentials & registration
- NPI registered
- February 2007 — 19 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 2006 — 20 yrs since
- Specialty taxonomy
- 363LF0000X — NUCC code
- State license (1)
- Massachusetts #239263
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1891833935. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
269
Distinct HCPCS
6
Medicare allowed
$18,197
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
95251 |
Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | 97 | 58 | $31 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 93 | 67 | $88 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 23 | 21 | $60 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 22 | 16 | $85 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 18 | 14 | $130 | |
99443 |
Telephone medical discussion with physician, 21-30 minutes | 16 | 14 | $88 |
In context: peer comparison
Among 119 peers in this city , average services per provider: 98. This provider delivers 2.7× the peer median.Open Payments
Industry payments received
All-time total
$141
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| SANOFI-AVENTIS U.S. LLC | 1 | $141.10 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
821
Patients
231
Total drug cost
$686,605
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Trulicity (Dulaglutide) | Brand | 135 | 28 | $196,893 |
| Jardiance (Empagliflozin) | Brand | 123 | 32 | $148,251 |
| Metformin Hcl | Generic | 105 | 34 | $1,944 |
| Atorvastatin Calcium | Generic | 61 | 19 | $1,080 |
| Lantus Solostar (Insulin Glargine,hum.Rec.Anlog) | Brand | 61 | 21 | $48,913 |
| Novolog Flexpen (Insulin Aspart) | Brand | 55 | 22 | $85,240 |
| Mounjaro (Tirzepatide) | Brand | 42 | 12 | $51,659 |
| Humalog Kwikpen U-100 (Insulin Lispro) | Brand | 36 | 14 | $43,983 |
| Ozempic (Semaglutide) | Brand | 36 | 16 | $61,344 |
| Rosuvastatin Calcium | Generic | 36 | 0 | $1,800 |
Frequently asked questions
What is Dr. Maria Koen's medical specialty?
Dr. Maria Koen practices Family Nurse Practitioner in Boston, MA.
Where does Dr. Maria Koen practice?
Dr. Maria Koen practices at 1 Joslin Pl, Boston, MA 022155306. Office phone: 6177322699.
What is Dr. Maria Koen's NPI?
Dr. Maria Koen's National Provider Identifier (NPI) is 1891833935, issued by NPPES.
Does Dr. Maria Koen accept Medicare assignment?
Yes. Dr. Maria Koen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Maria Koen commonly perform?
Top Medicare-reported procedures in 2023: Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report (HCPCS 95251); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.